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.
adj
Abbreviation of obstetric.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, not-comparable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
adj
Initialism of out of bounds.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, initialism, not-comparable
Topics: golf, hobbies, lifestyle, sports
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
adj
Abbreviation of obligatory (as in "ob. link" on Usenet) (see ObLink at c2.com; see also ob-)
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, not-comparable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
adj
Abbreviation of Old Babylonian.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, not-comparable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
name
A river in Russia; the westernmost of the three great Siberian rivers.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
a halfpenny
Definition source: English Wiktionary via Wiktextract
Usage: historical
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
an objection
Definition source: English Wiktionary via Wiktextract
Usage: archaic
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
the obese gene
Definition source: English Wiktionary via Wiktextract
Topics: biology, genetics, medicine, natural-sciences, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
observation
Definition source: English Wiktionary via Wiktextract
Topics: climatology, meteorology, natural-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of Olympic best.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
Topics: hobbies, lifestyle, sports
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of outside broadcast.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
Topics: broadcasting, media, radio, television
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of outside broadcasting.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
Topics: broadcasting, media, radio, television
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of old boy (a male graduate; also a CB radio operator's term of address for a male).
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Abbreviation of obstetrician.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Abbreviation of obstetrics.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Abbreviation of Old Babylonian.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
prep
Pronunciation spelling of of.
Definition source: English Wiktionary via Wiktextract
Usage: alt-of, pronunciation-spelling
Qualifier: chiefly African-American Vernacular or humorous
Synonyms: none provided
Antonyms: none provided
symbol
The set of objects of a category.
Definition source: English Wiktionary via Wiktextract
Topics: category-theory, computing, engineering, mathematics, natural-sciences, physical-sciences, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
the branch of medicine dealing with childbirth and care of the mother
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: obstetrics, tocology, midwifery
Antonyms: none provided
Broader terms: medicine, medical specialty
Narrower terms: fetology, foetology, perinatology
noun
a major river of western Siberia; flows generally northward and westward to the Gulf of Ob and the Kara Sea
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: Ob River
Antonyms: none provided
Broader terms: river
History
From Russian Обь (Obʹ).
From Latin ob, abbreviation of obolus.
Abbreviations.
Across languages
33 source translations are retained for this English entry.
