before vowels splen-, word-forming element meaning "spleen, spleen and," from Greek splen (see spleen).

before vowels sial-, word-forming element meaning "saliva," from Greek sialon "saliva."

word-forming element meaning "a physician; medicine; healing," from Greek iatros "healer, physician" (see -iatric).

before vowels, troph-, word-forming element meaning "nourishment, food," from Greek trophe "nourishment" (see -trophy).

word-forming element in scientific compounds meaning "of glass; glass-like, transparent," from Greek hyalos "glass, clear alabaster, crystal lens used as a burning glass," apparently a non-Greek word, said to be of Egyptian origin (glass was first made in Egypt).

medical word-forming element, from Greek histos "warp, web," literally "anything set upright," from histasthai "to stand," from PIE root *sta- "to stand, make or be firm." Taken by 19c. medical writers as the best Greek root from which to form terminology for "tissue, structural element of the animal body."

word-forming element of Greek origin meaning "two, double, twice, twofold," from Greek di-, shortened form of dis "twice," which is related to duo "two" and cognate with bi-, from PIE root *dwo- "two." In chemistry it indicates a compound containing two units of the element or radical to which it is prefixed.

also pleo-, word-forming element meaning "more," from Greek pleiōn "larger, greater in quantity, the more part, very many" (comparative of polys "much"), from PIE *ple- (source also of Latin plere "to fill," plebes, "the populace, the common people;" Greek plēthein "be full," plērēs "full"), possibly a variant of root *pele- (1) "to fill."

also oino-, word-forming element meaning "pertaining to wine," from Greek oinos "wine" (see wine (n.)).

word-forming element meaning "moss" in scientific compounds, from Greek bryos, bryon "moss."