释义 |
pro·ti·um I. \ˈprōd.ēəm, -ōshē-\ noun Usage: capitalized Etymology: New Latin, perhaps from prot- + -ium : a large genus of chiefly tropical American trees (family Burseraceae) having pinnate leaves and slender-pediceled paniculate flowers that are succeeded by globose drupes — see caranna, elemi II. noun (-s) Etymology: International Scientific Vocabulary prot- + -ium : the ordinary light hydrogen isotope of atomic mass 1 — symbol H1 or 1H; compare deuterium, proton, tritium |