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adder1 definition

adder (ad′ər)

noun

  1. one who adds
  2. ☆ an adding machine
  3. a computer circuit that performs addition
adder2 definition

ad·der (ad′ər)

noun

  1. a small, poisonous snake of Europe; common viper (Vipera berus)
  2. any of various other snakes, as the poisonous puff adder of Africa or the harmless milk snake of North America

Etymology: ME < nadder (by faulty separation of a nadder) < OE nædre < IE base *nətr, *nētr > L natrix, watersnake

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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