Mariposa, CA. Sponsored Topics. Mariposa (formerly Logtown) is a census-designated place (CDP) in and the county seat of Mariposa County, California, United States. The population was 2,173 at the 2010 census, up from 1,373 at the 2000 census.
aÂ·tomÂ·ic. adj. 1. Of or relating to an atom or atoms. 2. Of or employing nuclear energy: an atomic submarine; atomic weapons. 3. Very small; infinitesimal. aÂ·tomâ²iÂ·calÂ·ly adv.
atom definition. A unit of matter; the smallest unit of a chemical element. Each atom consists of a nucleus, which has a positive charge, and a set of electrons that move around the nucleus. (See Bohr atom.) Note: Atoms link together to form molecules.