TETRATOMIC

adj. Te2t-rast-osm'i2k. Lat., tetra-atomic us (from rerpa-, four, and arc/no?, uncut). Fr., tetra tom i que. Ger., vier a to mig. Containing four atoms; of a compound, containing four atoms of replaceable hydrogen; of a radicle, having its combining capacity saturated by union with four hydrogen atoms. [B.] [s. 611]