WordReference Random House Unabridged Dictionary of American English © 2026
as•the•no•pi•a
(as′thə nō′pē ə),USA pronunciation n. [Ophthalm.]
as•the•nop•ic
(as′thə nop′ik),USA pronunciation adj.
- Ophthalmologya fatigue or tiring of the eyes, usually characterized by discomfort, dimness of vision, and headache, caused by overuse of the visual organs, dysfunction of the ocular muscles, and incorrect refraction.
- Greek asthen(é̄s) frail (see asthenia) + -opia