Search ribosomal RNA (rRNA) ribosomal RNA (rRNA) /rī′bōsō″məl/ , the ribonucleic acid of ribosomes and polyribosomes. Tweet Telegram VK Random Words photoallergic contact dermatitis kinetic proofreading block Machover Draw-a-Person Test dyspareunia dilator pupillae Schedule II hypoblast Fèvre-Languepin syndrome