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Meaning of obligate

ob•li•gate

Pronunciation: (v.ob'li-gāt"adj.ob'li-git, -gāt"), [key]
— v. adj. -gat•ed, -gat•ing,
—v.t.
  1. to bind or oblige morally or legally: to obligate oneself to purchase a building.
  2. to pledge, commit, or bind (funds, property, etc.) to meet an obligation.
—adj.
  1. morally or legally bound; obliged; constrained.
  2. necessary; essential.
  3. restricted to a particular condition of life, as certain organisms that can survive only in the absence of oxygen:(opposed to facultative). obligate anaerobe
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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