Sometimes in latinized form chalazium. [a. Gr. χαλάζιον, dim. of χάλαζα CHALAZA.] A small pimple or tubercule; esp. one on the eyelid, a stye.
1708. Kersey, Chalazion, a Stithe, a small Pimple, or Wart on the Eye-lid.
1731. Bailey, II. Chalaza, Chalazion.
1878. T. Bryant, Pract. Surg., I. 343. A tarsal cyst sometimes degenerates into a hard fibrous little mass, feeling somewhat like a large shot beneath the skin, known as a chalazion.
