companion(redirected from companioned)
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Astronomy the fainter of the two components of a double star
a. a raised frame on an upper deck with windows to give light to the deck below
b. (as modifier): a companion ladder
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.