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.
1 Messenger RNA (mRNA) transcribes genetic information from the DNA found in a cell's nucleus, and then carries this information to the cell's cytoplasm and ribosome.  Transfer RNA (tRNA) is found in a cell's cytoplasm and is closely related to mRNA as its helper.