Ob Definition

ŏb, ôb, ôp
abbreviation
Obstetric.
American Heritage Medicine
Obstetrics.
Webster's New World
Obstetrician.
Webster's New World
Obadiah.
Webster's New World
He (or she) died.
Webster's New World
prefix
Inverse; inversely.
Obcordate.
American Heritage
pronoun

A major river in western Siberia, Russia.

Wiktionary
affix
To, toward, before, in front of.
Obtrude.
Webster's New World
Opposed to, against.
Obstinate.
Webster's New World
Upon, over.
Obscure.
Webster's New World
Completely, totally.
Obdurate.
Webster's New World
Inversely, oppositely.
Obovoid.
Webster's New World
noun

(historical) A halfpenny.

Wiktionary

(archaic) An objection.

Wiktionary

(genetics) The obese gene.

Wiktionary
Synonyms:
symbol

(category theory) The set of objects of a category.

Wiktionary

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 epi in Indo-European roots) vertere to turn versus

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin ob, abbreviation of obulus.

    From Wiktionary

Ob Sentence Examples

  • It is, however, more readily ob tained by boiling citraor meso-brompyrotartaric acids with alkalis.

  • This wide area is naturally subdivided into West Siberia (basins of the Ob and the Irtysh) and East Siberia (the remainder of the region).

  • The three principal rivers - the Ob, the Yenisei, and the Lena - take their rise on the high plateau or in the alpine regions fringing it, and, after descending from the plateau and piercing the alpine regions, flow for many hundreds of miles across the high plains and lowlands before they reach the Arctic, Ocean.

  • Examples are the Ob and the Irtysh, the Yenisei and the Angara (itself a double river formed by the Angara and the Lower Tunguzka), the Lena and the Vitim, the Argun and the Shilka, while the Amur in its turn receives a tributary as large as itself - the Sungari.

  • It is this Wale ' circumstance that facilitated the rapid invasion of Siberia Wal er l by the Russian Cossacks and hunters; they followed the omm courses of the twin rivers in their advance towards the east, and discovered short portages which permitted them to transfer their boats from the system of the Ob to that of the Yenisei, and from the latter to that of the Lena, a tributary of which - the Aldan - brought them close to the Sea of Okhotsk.

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