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complementary base: Meaning and Definition of

com'plemen'tary base'

Pronunciation: [key]
— Genetics. Genetics.
  1. either of the nucleotide bases linked by a hydrogen bond on opposite strands of DNA or double-stranded RNA: guanine is the complementary base of cytosine, and adenine is the complementary base of thymine in DNA and of uracil in RNA. Cf. base pair.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
complementary angle complementary cells
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