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18.119.248.48

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2 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 Ob-  A prefix signifying to, toward, before, against, reversely, etc.; also, as a simple intensive; as in oblige, to bind to; obstacle, something standing before; object, lit., to throw against; obovate, reversely, or oppositely, ovate. Ob- is commonly assimilated before c, f, g, and p, to oc-, of-, og-, and op-.
 

From: WordNet (r) 2.0

 Ob
      n 1: a major river of western Siberia; flows generally northward
           and westward to the Gulf of Ob and the Kara Sea [syn: Ob
           River]
      2: the branch of medicine dealing with childbirth and care of
         the mother [syn: obstetrics, tocology, midwifery]