Standard Lemma guide

obsidian

adj · noun · 4 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • UK: /ˌɒbˈsɪd.i.ən/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • US, also: /əbˈsɪd.i.ən/
  • rhymes with -ɪdiən
  • CMU ARPABET: AH0 B S IH1 D IY0 AH0 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Black.

Definition source: English Wiktionary via Wiktextract

Usage: poetic

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A type of naturally occurring black glass produced by volcanoes.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable, usually

Topics: chemistry, geography, geology, mineralogy, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: obby

Antonyms: none provided

3

noun

Meaning 3

A slightly bluish black, the color of obsidian glass.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable, usually

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

acid or granitic glass formed by the rapid cooling of lava without crystallization; usually dark, but transparent in thin pieces

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: volcanic glass

History

Etymology

From Latin obsidianus; named after Obsidius, who was, according to Pliny, the Roman who discovered the stone in Aethiopia.

Across languages

Translations

62 source translations are retained for this English entry.

  • Dutch: obsidiaan — poetic: black
  • Latvian: obsidiāns — poetic: black
  • Spanish: obsidiano — poetic: black
  • Afrikaans: lawaglas — a type of black glass produced by volcanoes
  • Ahtna: bestsʼae — a type of black glass produced by volcanoes
  • Arabic: سَبَج (sabaj) — a type of black glass produced by volcanoes
  • Armenian: վանակատ (vanakat) — a type of black glass produced by volcanoes
  • Bulgarian: обсидиан (obsidian) — a type of black glass produced by volcanoes
  • Catalan: obsidiana — a type of black glass produced by volcanoes
  • Chinese Mandarin: 黑曜岩 (hēiyàoyán) — a type of black glass produced by volcanoes
  • Chinese Mandarin: 黑曜石 (hēiyàoshí) — a type of black glass produced by volcanoes
  • Czech: obsidián — a type of black glass produced by volcanoes
  • Danish: obsidian — a type of black glass produced by volcanoes
  • Dutch: lavaglas — a type of black glass produced by volcanoes
  • Dutch: obsidiaan — a type of black glass produced by volcanoes
  • Egyptian: V31:I9-N17 (kf) — a type of black glass produced by volcanoes
  • Esperanto: obsidiano — a type of black glass produced by volcanoes
  • Finnish: obsidiaani — a type of black glass produced by volcanoes
  • Finnish: laavalasi — a type of black glass produced by volcanoes
  • French: obsidienne — a type of black glass produced by volcanoes
  • Georgian: ობსიდიანი (obsidiani) — a type of black glass produced by volcanoes
  • German: Obsidian — a type of black glass produced by volcanoes
  • German: Glasachat — a type of black glass produced by volcanoes
  • Greek: οψιδιανός (opsidianós) — a type of black glass produced by volcanoes
  • Hawaiian: mākā — a type of black glass produced by volcanoes
  • Hindi: ज्वालाकाच (jvālākāc) — a type of black glass produced by volcanoes
  • Hungarian: obszidián — a type of black glass produced by volcanoes
  • Icelandic: hrafntinna — a type of black glass produced by volcanoes
  • Ido: obsidiano — a type of black glass produced by volcanoes
  • Indonesian: obsidian — a type of black glass produced by volcanoes
  • Indonesian: batu kendan — a type of black glass produced by volcanoes
  • Indonesian: batu kaca — a type of black glass produced by volcanoes
  • Italian: ossidiana — a type of black glass produced by volcanoes
  • Japanese: 黒曜石 (kokuyōseki) — a type of black glass produced by volcanoes
  • Korean: 흑요석 (heugyoseok) — a type of black glass produced by volcanoes
  • Lower Tanana: bahtr'a — a type of black glass produced by volcanoes
  • Māori: matā — a type of black glass produced by volcanoes
  • Māori: tūhua — a type of black glass produced by volcanoes
  • Māori: matā tūhua — a type of black glass produced by volcanoes
  • Māori: mihiau — a type of black glass produced by volcanoes
  • Nahuatl: itztli — a type of black glass produced by volcanoes
  • Nahuatl: citlālcuitlatl — a type of black glass produced by volcanoes
  • Nandi: sengwet — a type of black glass produced by volcanoes
  • Navajo: noolyínii — a type of black glass produced by volcanoes
  • Polish: obsydian — a type of black glass produced by volcanoes
  • Portuguese: obsidiana — a type of black glass produced by volcanoes
  • Romanian: obsidian — a type of black glass produced by volcanoes
  • Russian: обсидиа́н (obsidián) — a type of black glass produced by volcanoes
  • Serbo-Croatian: opsidijan — a type of black glass produced by volcanoes
  • Seri: pajii — a type of black glass produced by volcanoes
  • Slovak: obsidián — a type of black glass produced by volcanoes
  • Spanish: obsidiana — a type of black glass produced by volcanoes
  • Swedish: obsidian — a type of black glass produced by volcanoes
  • Tagalog: obsidiyana — a type of black glass produced by volcanoes
  • Tanacross: mbehts'e' — a type of black glass produced by volcanoes
  • Tewa: tsee — a type of black glass produced by volcanoes
  • Turkish: obsidyen — a type of black glass produced by volcanoes
  • Turkish: obsidiyen — a type of black glass produced by volcanoes
  • Vietnamese: đá vỏ chai — a type of black glass produced by volcanoes
  • Vietnamese: hắc diện thạch — a type of black glass produced by volcanoes
  • Vietnamese: hắc diệu thạch — a type of black glass produced by volcanoes
  • Yiddish: אָבסידיאַן (obsidyan) — a type of black glass produced by volcanoes