1876, katabolism, "destructive metabolism," from Greek katabole "a throwing down" (also "a foundation"), from kataballein "to throw down," from kata "down" (see cata-) + ballein "to throw" (from PIE root *gwele- "to throw, reach"). Barnhart says probably formed in English on the model of metabolism. Spelling Latinized from 1889.
"art of throwing large missiles; science of the motion of projectiles," 1753, with -ics + Latin ballista "ancient military machine for hurling stones," from Greek ballistes, from ballein "to throw, to throw so as to hit," also in a looser sense, "to put, place, lay" (from PIE root *gwele- "to throw, reach").
"to protrude, extend forward beyond the main body," mid-15c., corruption of obsolete verb jet, from Old French jeter "to throw," from Latin iacēre "to lie, rest," related to iacere "to throw" (from PIE root *ye- "to throw, impel"). Related: Jutted; jutting. As a noun, "a jutting out, a projecting point" from 1786.
c. 1600, in medicine, from specialized sense of Latin iniectus "a casting on, a throwing over," past participle of inicere "to throw in or on; insert, bring into," from in- "in" (from PIE root *en "in") + -icere, combining form of iacere "to throw" (from PIE root *ye- "to throw, impel"). Related: Injectable; injected; injecting.
ancient war engine used for throwing missiles, late 14c., from Latin ballista"military machine for hurling stones," from Greek ballistes, from ballein "to throw, to throw so as to hit," also in a looser sense, "to put, place, lay" (from PIE root *gwele- "to throw, reach").