Standard Lemma guide

ooid

adj · noun · 2 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

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  • UK: /ˈəʊˌɔɪd/
  • US: /ˈoʊˌɔɪd/

1

adj

Meaning 1

Shaped like an egg; ovoid; ovate.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A small calcium carbonate- or iron-coated grain found on the seafloor.

Definition source: English Wiktionary via Wiktextract

Topics: geography, geology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From oo- (“egg”) + -id.

Across languages

Translations

2 source translations are retained for this English entry.

  • Finnish: munanmuotoinen — egg-shaped
  • Finnish: ooliitti — seafloor grain