from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Pertaining to both pleasure and pain.
from The Century Dictionary and Cyclopedia
- In psychology and esthetics, relating to the affections of pleasantness and unpleasantness; pertaining to pleasure and pain.
- In psychology and esthetics, the doctrine of affection; the science of pleasure and pain.
From Ancient Greek ἄλγος (algos, "pain") + ἡδονή ‘pleasure’. (Wiktionary)