from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Eating only one kind of food.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. That eats only one kind of food.
from The Century Dictionary and Cyclopedia
- Feeding on a single substance, or a single kind of food: opposed to heterophagous.
- Specifically, of sporozoans, passing the entire life-cycle in one host; permanently intracellular: contrasted with polyphagous.
Koine Greek μονοφάγος (monophagos, "that eats alone") + English -ous (Wiktionary)