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Meaning of uptake

up•take

Pronunciation: (up'tāk"), [key]
— n.
  1. apprehension; understanding or comprehension; mental grasp: quick on the uptake.
  2. an act or instance of taking up; a lifting: the uptake of fertilizer by machines.
  3. Also calleda pipe or passage leading upward from below, as for conducting smoke or a current of air.
  4. absorption.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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