RNA stands for ribonucleic acid. It is a type of genetic material that is involved in various cellular processes, including protein synthesis. It serves as a genetic messenger by carrying the instructions from DNA to the ribosomes, where proteins are made.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Molecule studied by 2023 Nobelist Katalin Kariko. Explanations are generated by AI and may be inaccurate.