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Meaning of -oid

-oid

Pronunciation: [key]
  1. a suffix meaning “resembling,” “like,” used in the formation of adjectives and nouns (and often implying an incomplete or imperfect resemblance to what is indicated by the preceding element):Cf.. alkaloid; anthropoid; cardioid; cuboid; lithoid; ovoid; planetoid.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.