from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The affective and conative character of mental activity as contrasted with its cognitive aspect; the appetitive aspect of an act; desire, appetite.
from The Century Dictionary and Cyclopedia
- n. In medicine, a desire or appetite.
From Latin orexis ("longing; appetite"), from Ancient Greek ὄρεξις (oreksis, "desire"), from ὀρέγω (oregō, "I reach, stretch"). (Wiktionary)