riboflavin /rī-bō-flāˈvin/ or riboflāˈvine /-vēn/ noun

(L flāvus yellow) a member of vitamin B complex, in yellowish-brown crystals, promoting growth in children

ribonuclease /ri-bō-nūˈkli-ās or -āz/ noun

An enzyme in the pancreas, etc, the first enzyme to be synthesized (1969)

ribonūˈcleotide noun

A nucleotide containing ribose

ribosōˈmal adjective

ribosome /rīˈbō-sōm/ noun

A small particle, found in large numbers in most cells and composed of RNA and protein, on which protein synthesis takes place

rīˈbōzyme noun

An RNA-derived molecule displaying enzyme-like activity

ribonucleic acids /rīˈbō-nū-klēˈik/ plural noun

Nucleic acids containing ribose, present in living cells, where they play an important part in the synthesis of proteins (abbrev RNA)

ribosomal RNA noun

The major component of ribosomes