Ob: Meaning and Definition of

Ob

1. a river in the W Russian Federation in Asia, flowing NW to the Gulf of Ob. 2500 mi. (4025 km) long.
2. an inlet of the Arctic Ocean. ab. 500 mi. (800 km) long.

OB

1. obstetrical.
2. obstetrician.
3. obstetrics.
2. off Broadway.
3. opening of books.
4. ordered back.

ob-

1. a prefix meaning “toward,” “to,” “on,” “over,” “against,” orig. occurring in loanwords from Latin, but now used also, with the sense of “reversely,” “inversely,” to form Neo-Latin and English scientific terms: object; obligate; oblanceolate.

ob.

1. he died; she died.
2. incidentally.
3. oboe.
4. observation.

O.B.

1. opening of books.
2. ordered back.