Standard Lemma guide
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
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.
name
Ellipsis of Omicron Hill: a mountain in North Slope borough, Alaska, United States.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, ellipsis
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
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.
Definition source: English Wiktionary via Wiktextract
Usage: capitalized, sometimes
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Ellipsis of Omicron variant.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, ellipsis, uncountable
Topics: biology, medicine, microbiology, natural-sciences, pathology, sciences, virology
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Alternative form of omicron (Greek letter) (especially in the majuscule form)
Definition source: English Wiktionary via Wiktextract
Usage: alt-of, alternative, countable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
the 15th letter of the Greek alphabet
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: letter, letter of the alphabet, alphabetic character
History
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.
Across languages
29 source translations are retained for this English entry.
