Definition of phytophagic in US English:

phytophagic

adjective

Entomology
  • 1Designating or relating to a variety of insect distinguished by features associated with its use of a specific host plant as a food source. Now historical.

  • 2Generally. Feeding on plants or plant material; phytophagous.

Origin

Mid 19th century; earliest use found in Benjamin Walsh (1808–1869). From phyto- + -phagic.

Pronunciation

phytophagic

/ˌfʌɪtəʊˈfadʒɪk/