ooid

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ooid

/ˈəʊˌɔɪd/ UK
/ˈoʊˌɔɪd/ US

Where it comes from

Learned borrowing from Ancient Greek ᾠοειδής (ōioeidḗs). By surface analysis, oo- (“egg”) + -(o)id (“-like, appearing”).

noun ooids

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

adjective more ooid · most ooid

Shaped like an egg; ovoid; ovate. One thinks of everything from amphitheaters like the Colosseum to Buckminster Fuller in his more ooid modes

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MLA

"ooid." Wiktionary, via Micwyn, micwyn.com/word/ooid. Accessed 6 Nov. 2026.

APA

ooid. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/ooid

Chicago

"ooid." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/ooid.

BibTeX

@misc{ooid_2026,
  title = {ooid},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/ooid},
  urldate = {2026-11-06}
}