Answer: GMOS

GMOs stands for Genetically Modified Organisms. GMOs are living organisms whose genetic material has been altered using genetic engineering techniques. They are regulated by the F.D.A. (U.S. Food and Drug Administration) in terms of their safety and potential impact on human health and the environment.

Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: They're regulated by the F.D.A.. Explanations are generated by AI and may be inaccurate.