omicron

English · Français · Italiano · Română

AI In plain words

Writing a short explanation…

Written by a house AI from the entry below, in your language. The entry itself is the source.

omicron^¹

/ˈɒmɪkɹɒn/ UK
/ˈɒmɪkɹən/ UK
/ˈəʊmɪkɹɒn/ UK
/əʊˈmaɪkɹɒn/ UK
/əʊˈmaɪkɹən/ UK
/əˈmaɪkɹɒn/ UK
/əˈmaɪkɹən/ UK
/ˈoʊməˌkɹɑn/ US
/ˈoʊmɪˌkɹɑn/ US
/ˈɑməˌkɹɑn/ US
/ˈɑmɪˌkɹɑn/ US

Sounds like Omicron · Rhymes with -aɪkɹɒn

Where it comes from

From Latin omicron, from Koine Greek ὂ μῑκρόν (ò mīkrón, “little o”), named in contrast with omega (“big o”). The uncommon form omicra is similarly borrowed from Latin and Greek. The use for designating stars in a constellation—typically in order of apparent brightness—began with Johann Bayer's 1603 Uranometria.

noun omicrons · omicra · Omicron · omikron · Omikron · o

capitalized, sometimes The 15th letter of the Classical and Modern Greek alphabets (16th in Ancient and Old Greek), used in ordering lists as in naming (astronomy) the 15th star of a constellation or (epidemiology) the 15th discovered major variant of a disease. Your Majestie knows that unfortunate I [...] was the first who when I published my Poem of Italia Liberata endeavoured to bring the Omicron, Eupselon, Omega, and other Greek Letters, which I thought very requisite for that language, into my own Tongue;

noun Omicron · omikron · Omikron · o · O · Ο

abbreviation, ellipsis, uncountable Ellipsis of Omicron variant

Omicron^²

Sounds like omicron · Rhymes with -aɪkɹɒn

noun

abbreviation, ellipsis, uncountable Ellipsis of Omicron variant

noun Omicrons · Omicra

alternative, countable Alternative form of omicron (Greek letter) (especially in the majuscule form)

proper noun

abbreviation, ellipsis Ellipsis of Omicron Hill: a mountain in North Slope borough, Alaska, United States.

Translations

Every language

noun Greek letter

Español	ómicron
한국어	오미크론 omikeuron
日本語	オミクロン omikuron
中文	奧米克戎 /奥米克戎 àomǐkèróng, 奧密克戎 /奥密克戎 àomìkèróng
Português	ómicron, ômicron
Français	omicron
Deutsch	Omikron
Italiano	omicron
Ελληνικά	όμικρον ómikron
Русский	омикро́н omikrón
العربية	أُومِيكْرُون ʔumikrūn

Talk about this word

Cite this

MLA

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

APA

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

Chicago

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

BibTeX

@misc{omicron_2026,
  title = {omicron},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/omicron},
  urldate = {2026-11-06}
}