alidad

Variant of alidade

alidade definition

ali·dade (al′i dād′)

noun

  1. a part of an optical or surveying instrument, consisting of the vernier, indicator, etc.
  2. a surveying instrument consisting of a telescope mounted on a rule, used in topography
Also alidad al′i·dad′ (-dad′)

Etymology: Fr < Sp alidada < Ar al ʿiḍāda, two sides or sideposts < ʿaḍud, upper arm

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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