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 H 1 or 1 H; compare deuterium , proton , tritium