noun, plural cha·la·zi·a [kuh-ley-zee-uh] /kəˈleɪ zi ə/.
- Ophthalmology. sty2.
- a small cyst on the eyelid resulting from chronic inflammation of a meibomian glandAlso called: meibomian cyst
small tumor in the eyelid, 1708, from Greek khalazion, diminutive of khalaza “hail, hailstone; small lump or knot; pimple,” from PIE root *gheled- “hail.”