Rn -symbol

  1. radon

RN [,är-'en] -n

  1. registered nurse
  2. Royal Navy

RNA [,är-(,)en-'ā] -n

  1. any of various nucleic acids that contain ribose and uracil as structural components and are associated with the control of cellular chemical activities

RNAi [,är-,en-,ā-ī] -n

  1. rna interference

RNA interference -n

  1. a posttranscriptional genetic mechanism that suppresses gene expression and in which double-stranded RNA cleaved into small fragments initiates the degradation of a complementary messenger RNA
  2. a technique that artificially induces RNA interference

RNA polymerase -n

  1. any of a group of enzymes that promote the synthesis of RNA using DNA or RNA as a template

RN·ase [,är-'en-,ās, -,āz] -n

  1. ribonuclease

RNA virus -n

  1. a virus (as a paramyxovirus or a retrovirus) whose genome consists of RNA

rnd -abbr

  1. round