Etymology
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feeding (n.)

"act of taking food," Old English feding, verbal noun from feed (v.). Feeding frenzy is from 1989, metaphoric extension of a phrase that had been used of sharks since 1950s.

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intravenous (adj.)
"in or occurring within a vein," 1847, from intra- "within, inside" + Latin venous, from vena "vein" (see vein). Related: Intravenously.
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force-feed (v.)
by 1905 in animal husbandry, from force (n.) + feed (v.). Related: Force-fed; force-feeding. Force-feeding (n.) is from 1900.
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larvivorous (adj.)

"feeding on grubs and caterpillars," 1863; see larva + -vorous.

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phyllophagous (adj.)

"leaf-eating, feeding on leaves," 1819, from phyllo- "leaf" + -phagous "eating."

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bird-seed (n.)
also birdseed, "small seed used for feeding birds," 1736, from bird (n.1) + seed (n.).
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carnivorous (adj.)
"eating or feeding on flesh," 1640s, from Latin carnivorus "flesh-eating, feeding on flesh," from caro (genitive carnis) "flesh" (originally "a piece of flesh," from PIE root *sker- (1) "to cut") + vorare "to devour" (from PIE root *gwora- "food, devouring"). Related: Carnivorously; carnivorousness; carnivoracity.
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saprophagous (adj.)

"feeding on putrid matter," 1819, Modern Latin; see sapro- + -phagous.

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piscivorous (adj.)

"fish-eating, habitually feeding upon fish," 1660s, from Latin piscis "a fish" (from PIE root *pisk- "a fish") + -vorous "eating, devouring."

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ophiophagous (adj.)

"serpent-eating," 1640s; see ophio- "serpent, snake" + -phagous "eating, feeding on." 

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