plural of ribbon seal

A species (Histriophoca fasciata) of true seal (or earless seal) found in the Arctic and subarctic regions of the North Pacific Ocean.

(genetics) Of or pertaining to ribonucleic acid (RNA) or its derivatives

plural of ribaudequin

plural of ribattuta

(music) A musical ornament consisting of a trill on a long-short dotted rhythm accelerating to end on either a tremolo or a regular trill.

plural of ribald

(pharmacology) A synthetic analog of guanosine C₈H₁₂N₄O₅ that inhibits viral nucleic acid synthesis and is used as a broad-spectrum antiviral drug especially in the treatment of respiratory syncytial virus infection and chronic hepatitis C.

Mora moro, the common mora, a deep-sea cod-like fish.

Initialism of Royal Institute of British Architects.