i Register
In some senses, ob is marked as archaic, historical. Watch for register when choosing this word.
ob
/ɒb/
noun 9adj 4name 1symbol 1
Collocations
2ADJ.
western
PREP.
in
Definitions
noun
1
a halfpenny
noun
1
an objection
2
the obese gene
3
observation
name
1
A river in Russia; the westernmost of the three great Siberian rivers.
Thesaurus
Synonyms
noun — the branch of medicine dealing with childbirth and care of t
- obstetrics
- tocology
- midwifery
Antonyms
Idioms & Phrases
Example Bank
201
One woman in ten is at risk — yet one-third of all women over 50 have never had a mammo! By making Pap tests routine, OBs and GYNs have saved many lives.
Wiktionary02
The river Ob, located in western Siberia, is Russia's longest river.
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