ribonucleoside

ri·bo·nu·cle·o·side

[rahy-boh-noo-klee-uh-sahyd, -nyoo-]
noun Biochemistry.
a ribonucleotide precursor that contains ribose and a purine or pyrimidine base.

Origin:
1930–35; ribo(nucleic acid) + nucleoside

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Medical Dictionary

ribonucleoside ri·bo·nu·cle·o·side (rī'bō-n&oomacr;'klē-ə-sīd', -ny&oomacr;'-)
n.
A nucleoside that contains ribose as its sugar component; as in uridine.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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00:10
Ribonucleoside has a plethora of syllables.
So is dichlorodiphenyltrichloroethane. Does it mean:
a white, crystalline, water-insoluble solid, C14H9Cl5, usually derived from chloral by reaction with chlorobenzene in the presence of fuming sulfuric acid: used as an insecticide and as a scabicide and pediculicide: agricultural use prohibited in the U.S.
the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
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