- river in W Siberia, flowing from the Altai Mountains northwest & north into the Gulf of Ob: 2,495 mi (4,015 km)
- arm of the Kara Sea, in NW Siberia: c. 600 mi (966 km) long
Origin of ob.Classical Latin obiit he (or she) died
Origin of ob.L obiter in passing; incidentally
- to, toward, before, in front of: obtrude
- opposed to, against: obstinate
- upon, over: obscure
- completely, totally: obdurate
- inversely, oppositely: obovoid
Origin of ob-from Classical Latin ob, toward, for, about, before from Indo-European base an unverified form epi-, an unverified form opi-, near, at, toward, after from source Classical Greek epi
- a. obstetricb. obstetrics
- Latin obiit (he or she died)
- Latin obiter (incidentally)
Origin of ob-New Latin short for obversē obversely from Latin obversus past participle of obvertere to turn toward ob- toward, against ( from ob toward, against, before ; see epi in Indo-European roots.) vertere to turn ; see versus .
- (historical) A halfpenny.
From Latin ob, abbreviation of obulus.
- Usually written followed by a pair of parentheses enclosing a capital letter which is the label of some particular category.