Possibly influenced by Danish grim (âsoot, grimeâ), Old Dutch grijmsel, Middle Dutch grime, Middle Low German greme (âdirtâ). Dirt, grease, soot, etc. that is ingrained and difficult to remove.
messenger RNA. a molecule of RNA that is synthesized in the nucleus from a DNA template and then enters the cytoplasm, where its genetic code specifies the amino acid sequence for protein synthesis.
Messenger RNA mRNA. Definition. noun. A type of RNA that carries the code or chemical blueprint for a specific protein. In the early stages of protein synthesis, the mRNA is synthesized from a DNA template during transcription.