RNA Definition
ärĕn-ā
noun
A nucleic acid that is an essential component of all cells, composed of a long, usually single-stranded chain of nucleotide units that contain the sugar ribose; ribonucleic acid.
Webster's New World
Synonyms:
Other Word Forms of RNA
Noun
Singular:
RNA
Plural:
rnasOrigin of RNA
r(ibo)n(ucleic) a(cid)
From American Heritage Dictionary of the English Language, 5th Edition