from The American Heritage® Dictionary of the English Language, 4th Edition

  • Inverse; inversely: obcordate.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • Against; facing; a combining prefix found in verbs of Latin origin.
  • Of a reversed shape.
  • Obligatory; prepended to the name of a topic being mentioned to avoid accusations of being off-topic.

from the GNU version of the Collaborative International Dictionary of English

  • 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-.


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.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin ob. (Wiktionary)


  • Success stories like the Indian bank aside, industry ob- servers say TCS could do much better in getting more revenue out of each customer. News

  • It enrages me to think we've become so ob- sessed with the superficial Surgery is no 'quick fix'.

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