at time

Science Dictionary
time   (tīm)  Pronunciation Key 
  1. A continuous, measurable quantity in which events occur in a sequence proceeding from the past through the present to the future. See Note at space-time.

    1. An interval separating two points of this quantity; a duration.

    2. A system or reference frame in which such intervals are measured or such quantities are calculated.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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