"bisexuality, androgynousness," 1916, from ambisexual + -ity.

"having simultaneous conflicting feelings or contradictory ideas about something," 1916, originally a term in psychology; a back-formation from ambivalence. In general use by 1929.

"large, natural community of plants and animals," 1916, formed from Greek bios "life" (from PIE root *gwei- "to live") + -ome, an Anglicization of Greek -(o)ma, neuter noun suffix (see -oma). Probably coined by U.S. ecologist Frederic E. Clements.

"non-rigid airship," 1916, of obscure origin, with many claimants (even J.R.R. Tolkien had a guess at it). "One of the weird coinages of the airmen" [Weekley]. Common theory (which dates to 1919) is that it is from the designers' prototype nickname Type B-limp, in the sense of "without internal framework," as opposed to Type A-rigid; thus see limp (adj.), but references are wanting. There apparently was a type b in the U.S. military's development program for airships in World War I.

by 1916 as "one devoted to cultivating fitness and strength," used earlier in reference to healthful nutriments and coach-body makers. In the modern sense probably from body-building, which is attested by 1892, perhaps 1881, in the "training for physical strength and fitness" sense, said to have been coined by R. J. Roberts, superintendent of the Boston Y.M.C.A. gymnasium. See body (n.) + build (v.).

"shorthand used by journalists in cablegrams," 1916, from cable in the telegraphic sense + -ese as a language-name suffix. "Since cablegrams had to be paid for by the word and even press rates were expensive the practice was to affix Latin prefixes and suffixes to make one word do the work of several" [Daniel Schorr], such as exLondon and Londonward to mean "from London," "to London" (non-Latin affixes also were used). Hence the tale, famous in the lore of the United Press International, of the distinguished but harried foreign correspondent who reached his breaking point and wired headquarters UPSTICK JOB ASSWARD. Its economy and expressive power fascinated Hemingway in his newspapering days.

also ceasefire, "a cessation of shooting," 1916, from the verbal phrase cease fire, attested from 1847 as a military command (formerly also signaled by bugles), from cease (v.) + fire (n.) in the gunnery sense. Generally written as two words until after mid-20c.

"the business of an authorized trader," 1916, from dealer + -ship.

1916, in reference to certain chemical compounds, from epi- + first element of oxygen. Epoxy- is used as a prefix in chemistry to indicate an oxygen atom that is linked to two carbon atoms of a chain, thus forming a "bridge" ("intramolecular connection" is one of the chemical uses of epi-). Resins from epoxides are used as powerful glues. Hence the verb meaning "to bond with epoxy" (1965). Related: Epoxied.

"outgoing, overtly expressive person," 1916, extravert (spelled with -o- after 1918, by influence of introvert), from German Extravert, from extra "outside" (see extra-) + Latin vertere "to turn" (from PIE root *wer- (2) "to turn, bend"). Used (with introvert) in English by doctors and scientists in various literal senses since 1600s, but popularized in a psychological sense early 20c. by Carl Jung. Related: Extroverted.