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antenna

 - 3 dictionary results

an⋅ten⋅na

[an-ten-uh]
–noun, plural -ten⋅nas for 1, -ten⋅nae [-ten-ee] for 2.
1. a conductor by which electromagnetic waves are sent out or received, consisting commonly of a wire or set of wires; aerial.
2. Zoology. one of the jointed, movable, sensory appendages occurring in pairs on the heads of insects and most other arthropods.


Origin:
1640–50; < L: a sailyard


an⋅ten⋅nal, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To antenna
an·ten·na   (ān-těn'ə)   
n.   pl. an·ten·nae (-těn'ē)
    1. Zoology One of the paired, flexible, segmented sensory appendages on the head of an insect, myriapod, or crustacean functioning primarily as an organ of touch.

    2. Something likened to this sensory appendage, as in function or form: sensitive public relations antennae.

  1. pl. an·ten·nas A metallic apparatus for sending or receiving electromagnetic waves.


[Medieval Latin, from Latin, sail yard, translation of Greek keraia, insect feeler, yardarm.]
an·ten'nal adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

antenna 
1646, from L. antenna "sail yard," the long yard that sticks up on some sails, of unknown origin, perhaps from PIE base *temp- "to stretch, extend." In this sense, it is a loan-transl. of Gk. keraiai "horns" (of insects). Modern use in radio, etc., for "aerial wire" is from 1902.
Online Etymology Dictionary, © 2001 Douglas Harper
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