a river in N central Russia, formed at Bisk by the confluence of the Biya and Katun Rivers and flowing generally north to the Gulf of Ob (an inlet of the Arctic Ocean): one of the largest rivers in the world, with a drainage basin of about 2 930 000 sq km (1 131 000 sq miles). Length: 3682 km (2287 miles)
OB in British English
British
abbreviation for
1.
Old Boy
2.
outside broadcast
ob. in British English
abbreviation for
1.
(on tombstones) obiit
2.
obiter
3.
oboe
Word origin
(for sense 1) Latin: he (or she) died; (for sense 2) Latin: incidentally; in passing
ob- in British English
prefix
inverse or inversely
obovate
Word origin
from Old French, from Latin ob. In compound words of Latin origin, ob- (and oc-, of-, op-) indicates: to, towards (object); against (oppose); away from (obsolete); before (obstetric); down, over (obtect); for the sake of (obsecrate); and is used as an intensifier (oblong)
OB in American English
1.
obstetrician
2.
obstetrics
Ob in American English1
(oʊb; Russian ˈɔbj)
1.
river in W Siberia, flowing from the Altai Mountains northwest & north into the Gulf of Ob: 2,495 mi (4,015 km)
2.
Gulf ofarm of the Kara Sea, in NW Siberia: c. 600 mi (966 km) long
Ob in American English2
Bible
Obadiah
ob. in American English
1.
he (or she) died
2.
incidentally
Word origin
(sense 1) L obiit; (sense 2) L obiter
ob- in American English
(ɑb; əb)
1.
to, toward, before, in front of
obtrude
2.
opposed to, against
obstinate
3.
upon, over
obscure
4.
completely, totally
obdurate
5.
inversely, oppositely
obovoid
▶ USAGE: In words of Latin origin it becomes oc- before c; of- before f; o- before m; and op- before p
Word origin
< L ob, toward, for, about, before < IE base *epi-, *opi-, near, at, toward, after > Gr epi