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AXEINOS → EUXEINOS → KARADENIZ → ?

Why Is the Black Sea Called the Black Sea?

462 BC → TODAY · one sea, several hypotheses

Why is the Black Sea “black”? One influential explanation says that, in an old system of colours and directions, black stood for north. But the medieval documents complicate the story: names meaning “Black Sea” appear in several languages, and the exact trail of the designation is not established.

Jump to the documentary traces

?473 BC
Euxeinos — the oldest surviving trace, date uncertain
462 BC
Axeinos — regarded as older, attested second
1338
Mare Nigrum — Pascal of Vittoria, from Almaliq
The Black Sea from orbit, satellite image
The Black Sea from orbit: blue and green, though called black. Photo: NASA, Wikimedia Commons, public domain

KARA

Four forms, four statuses:

  1. AXEINOS regarded as older · Pindar, Pythian 4.203, 462 BC
  2. EUXEINOS attested first · Pindar, Nemean 4.49, ?473 BC
  3. KARA DENIZ the northern hypothesis · first Ottoman attestation unestablished
  4. BLACK SEA modern form · no proven chain

Why Is the Black Sea Called the Black Sea?

On the standard account, the modern name comes through Turkish Karadeniz — kara means “black”, but historically it also served as a term for the north. Hence “the northern sea”, in an older system where colours could mark compass points; the exact chain of transmission is not documented, though. The name is the last link in a far older chain: the Greeks knew the sea as Axeinos and then Euxeinos, and the first of these probably goes back to an Iranian root.

The first name · Greek

The Unwelcoming

One influential explanation starts from a reconstructed Iranian term, *axšaina-, “dark coloured”. The Greeks would have reinterpreted the form as Áxeinos, “inhospitable” — then softened it into Eúxeinos. Schmitt calls the derivation “generally accepted”; it has also been challenged.

*axšaina-

“dark coloured”

The reconstructed Iranian term behind Axeinos, after Vasmer, quoted by Schmitt. Cognate with Avestan axšaēna- and Old Persian axšaina-.

RECONSTRUCTED

Póntos Áxeinos

“the inhospitable sea”

Regarded as older by all the ancient authors, yet attested only in Pindar, Pythian 4.203, 462 BC. The “inhospitable” sense comes from popular etymology. (Schmitt prints “4.263”, a numbering the current editions do not share.)

ATTESTED

Eúxeinos

“hospitable”

The euphemism that replaces the ill-omened name. Oldest surviving attestation: Pindar, Nemean 4.49 — if the ode's dating (?473 BC) is correct; then into common use.

ATTESTED

Once, in Euripides (Iphigenia in Tauris, 107), the sea is Póntos Mélas — “may be” a poetic metaphor, not a foreign calque.

Ptolemy's world map, Ulm edition 1482
Greek names on a printed sea: Ptolemy's world map, Ulm, 1482. Photo: Ptolemy, Wikimedia Commons, public domain
Stone ruins at Histria under a clear sky
The ruins of Histria: colonisation context, not the name's date. Photo: Klaul, Wikimedia Commons, CC BY-SA 4.0
A re-raised Ionic column at Histria
A re-raised Ionic column at Histria. Photo: Fusionofhorizons, Wikimedia Commons, CC BY-SA 3.0 RO

axeinos → euxeinos · regarded as older, attested second

The second name · a hypothesis

The compass hypothesis

Turkish kara keeps two senses: black and, archaically, north. Hence an attractive idea: if black stood for north, Kara Deniz would be “the northern sea”. The idea is influential — and disputed.

What the dictionary says: kara

From Ottoman Turkish kara ← Old Anatolian Turkish qara ← Proto-Turkic *kara (“dark, black”).

  • adjective: black, dark
  • noun, archaic: north

A clue from the wind vocabulary

karayel = kara + yel: “a wind blowing from the north-west, usually cold, sometimes of storm strength”. It shows kara living in directional vocabulary — without proving the etymology of Karadeniz.

The second point: Akdeniz

Akdeniz = ak (“white”) + deniz (“sea”), from Ottoman Turkish Ak Deñiz. That the Mediterranean would be “the western sea” belongs to the same hypothesis: in traditional orientation systems, white may stand for west.

The hypothesis: four colours, four points

After Schmitt, an old system paired colours with directions: black for north, red for south, white for west, green or light blue for east. The symbolism is widely attested — Schmitt cites Knobloch — but that the name Karadeniz was born as “the northern sea” remains an interpretation.

  • Nblack · karanorthKaradeniz — the Black Sea
  • Sred · kızılsouth, only inside the systemKızıldeniz — the Red Sea
  • Wwhite · akwest, only inside the systemAkdeniz — the Mediterranean
  • Egreen or light blueeastno colour-sea carries this point

DISPUTED

A note: an Anatolian variant (Calvet) reads ak as south. Noted; not adjudicated.

The strongest counter-case: Karatay (2011) shows that forms meaning “Black Sea” appear in Hungarian documents from the early 13th century, then in Snorri (c. 1230) — before the Anatolian sources offer a comparable chain.

Why not the Scythians: a people north of the sea cannot call its southern sea “northern” (Schmitt).

An interpretive model — not a proven etymology.

Portolan chart from the Battista Agnese atlas, 1550
Three seas on one chart: the Agnese atlas, 1550. Photo: Battista Agnese, Wikimedia Commons, public domain
Piri Reis's world map, detail
Turkish cartography: Piri Reis's world map. Photo: Piri Reis, Wikimedia Commons, public domain
Turquoise phytoplankton swirls in the Black Sea
The sea from above: phytoplankton swirls in satellite light. Photo: Norman Kuring / NASA, Wikimedia Commons, public domain

Modern forms · separate traces

Modern forms and their traces

Karadeniz, Marea Neagră, Chyornoye more, Black Sea — four modern forms, four separate histories. Who translated first, and exactly when, is unknown; the page draws no arrows between them.

After Schmitt, the modern names reach back no further than the 13th century — and the 13th century already brings “black” forms in Hungarian and Norse, not a documented Ottoman chain.

Schmitt again: the old name “seems to have” survived in the Near East until the Turks borrowed and propagated it anew. An attributed continuity, still unproven.

Each form on its own

  1. Karadeniz — Turkish · first Ottoman attestation unestablished here
  2. Marea Neagră — Romanian · first attestation unestablished here
  3. Chyornoye more — Russian · first attestation unestablished here
  4. Black Sea — English · first attestation unestablished here

a list, not a chain.

  • 1484: Cetatea Albă and Kiliia pass under Ottoman rule — without dating the name Karadeniz.
  • 1878: Northern Dobruja joins Romania — without dating the name Marea Neagră.
The Benincasa portolan of 1466, detail
Names on vellum: the Benincasa portolan, 1466. Photo: Grazioso Benincasa, Wikimedia Commons, public domain
Map of the Romanian–Bulgarian frontier, 1878
The Romanian–Bulgarian frontier and the “Mer Noire”, 1878. Photo: Zeitschrift für allgemeine Erdkunde, Wikimedia Commons, public domain

The centrepiece · a documentary timeline

Traces, not masters

Seven traces: five dated attestations, two unknowns. No change of master stands in for proof of the name.

Evidence filter:

  1. ?473 BC

    EUXEINOS

    Pindar, Nemean 4.49. The oldest surviving trace — if the ode's dating is correct.

    C09

    ATTESTED

  2. 462 BC

    AXEINOS

    Pindar, Pythian 4.203. Regarded as older, attested second.

    C07

    ATTESTED

  3. early 13th c.

    “BLACK” FORM

    Hungarian document, quoted by Karatay 2011. The exact form is not given here.

    C18

    ATTESTED

  4. c. 1230

    SVARTAHAF

    Snorri Sturluson, Heimskringla — traditional attribution.

    C19

    ATTESTED

  5. 1338

    MARE NIGRUM

    Pascal of Vittoria, letter from Almaliq, 10 August.

    C20

    ATTESTED

  6. ?

    KARADENIZ

    The first Ottoman attestation is not established in this documentation.

    —

    DATE UNKNOWN

  7. ?

    MAREA NEAGRĂ

    The first Romanian attestation is not established in this documentation.

    —

    DATE UNKNOWN

Explorer · the hypothesis rose

How the hypothesis works

Four points, four colour-words, three seas. Choose a cardinal point: the rose turns and shows what the model says — not what has been proven.

Point N · 1 of 4462 BC → today

Karadeniz — the Black Sea

kara · blacknorth

C04

The clue from the wind

  • karayel

    kara + yel · wind from the north-west

    C02

An interpretive model — not a proven etymology.

The rose, in brief

PointColourDirectionSeaSource
Nkara · blacknorthKaradeniz — the Black SeaC04
Skızıl · redsouth — only inside the systemKızıldeniz — the Red SeaC04
Wak · whitewest, only inside the systemAkdeniz — the MediterraneanC03–C04
Egreen or light blueeastno colour-sea carries this pointC04

Why doesn't it close the case?

  • “Black” forms appear in Hungarian (early 13th c.) and Norse (c. 1230) — ahead of any documented Ottoman chain.
  • Pascal of Vittoria writes Mare Nigrum in 1338, with no Turkish compass in sight.
  • Karayel shows kara living in directional vocabulary; it does not prove the etymology of Karadeniz.
Portolan compass rose from the Martines atlas, 1591
A rose that means direction: the Martines atlas, 1591. Photo: Joan Martines, Wikimedia Commons, public domain

Play · six rounds

Attested, reconstructed, or hypothesis?

Six claims about the sea's name. Choose each one's status: what is attested, what is reconstructed, what stays a hypothesis.

1 Axeinos, 462 BC
2 *axšaina- lies behind
3 Karadeniz = the northern sea
4 Svartahaf, c. 1230
5 1484 is the year of Kara Deniz
6 Mare Nigrum, 1338

Score 0 / 6

Three moments · three numbers

The numbers

Three numbers hold the whole piece.

?473 BC

Euxeinos, the oldest surviving trace

Pindar, Nemean 4.49 — date uncertain

462 BC

Axeinos, regarded as older

Pindar, Pythian 4.203 — attested second

3 seas · 4 points

Three seas pinned to four points

computed from the rose

Four errors · four corrections

The myths

Four things often said about the sea's name. All four fall.

The sea is called black because its deep water is oxygen-free.

We have no evidence that the modern name comes from anoxic water: “The name Black Sea is not derived from the color of the water or from any climatic particulars, as previously had been supposed” (Schmitt). One influential explanation ties it to the old symbolism of colours and cardinal points — but the exact origin stays disputed. The deep-water measurements live at their source: The Black Sea, two storeys →

The Scythians named it.

No. The Scythians lived north of it — a northern people cannot call its southern sea “northern” (Schmitt).

Euxeinos was the friendly name all along.

No. The friendly name is the cover-up: the euphemism replaced an ill-omened Axeinos (C08–C09). Histria is the colonisation context, not the date of the change.

“Kızıl” means south.

No. Red is south only inside the colour-compass system; the dictionary gives kızıl no cardinal sense (C05).

Sources

Strong sources first: Schmitt, Pindar (Perseus), Strabo, Karatay, Yule. Dictionaries stay lexical aids. Every risky claim points at its source.

C01kara = black + north (archaic); the OT ← OAT ← PT *kara chain — a lexical aidWiktionary: kara
C02karayel = kara + yel, wind from the north-west — a clue, not prooftr.wiktionary: karayel
C03Akdeniz = ak (“white”) + deniz; “west” only as an in-system symbolic senseWiktionary: Akdeniz
C04the colour-direction system (after Knobloch); “Northern Sea” as interpretation; the Achaemenid hypothesis; Scythians excludedSchmitt, Iranica
C05kızıl with no cardinal sense of its own; red = south only in-systemSchmitt, Iranica (framing)
C06Axeinos from reconstructed Iranian *axšaina- “dark coloured” (Vasmer); derivation challenged tooSchmitt, Iranica
C07Axeinos in Pindar, Pythian 4.203 (Schmitt prints “4.263”), 462 BCPindar, Pythian 4 (Perseus)
C08popular etymology toward a-xeinos “inhospitable”Schmitt, Iranica
C09the Euxeinos “hospitable” euphemism, in Pindar, Nemean 4.49 (?473 BC, date uncertain)Pindar, Nemean 4 (Perseus)
C10Strabo: Axine → Euxine; the sea often simply “the Pontus”Strabo 7.3.6, Perseus
C10bPóntos Mélas in Euripides: “may be” a poetic metaphorSchmitt, Iranica
C11modern forms reaching back only to the 13th centurySchmitt, Iranica
C12the old name surviving; the Turks spreading it anewSchmitt, Iranica
C13the name not from the water's colourSchmitt, Iranica (quoted)
C14the oxygen-free deep: modern measurements, at the siblingthe sibling piece
C15Histria: Milesians, Getae; 630 / 657–6 BC — context, not the name's dateWikipedia: Histria
C161484: Cetatea Albă + Kiliia under the Ottomans — the year does not date KaradenizWikipedia: Bilhorod
C171878: Northern Dobruja in Romania — the year does not date Marea NeagrăWikipedia: Northern Dobruja
C18a “black” form in a Hungarian document, early 13th c.; the Turks — a secondary roleKaratay 2011 (abstract)
C19Svartahaf in Snorri, c. 1230; Karatay's Bulgar thesis is conjecturalKaratay 2011 (abstract)
C20Mare Nigrum in Pascal of Vittoria, letter of 10 August 1338Yule, Cathay III (full text)

How this was documented: every row above ties one claim to one read source. What could not be dated — Ottoman Karadeniz, Romanian Marea Neagră — stands on the page as unknown, not as a filled gap.

Type: Fraunces, Newsreader and Atkinson Hyperlegible, under the SIL Open Font Licence.