Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Inflammation of the eyelids, characterized by thickening and hardening of the edges.
  • n. A thickening of the horny layer of the skin as a result of chronic pressure or friction.
  • n. See tylose.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. a thickening of the skin, especially of the eyelids
  • n. a balloonlike growth in a plant cavity; a tylose

from the GNU version of the Collaborative International Dictionary of English

  • n. An intrusion of one vegetable cell into the cavity of another, sometimes forming there an irregular mass of cells.

from The Century Dictionary and Cyclopedia

  • n. In botany, a growth formed in the cavity of a duct by the intrusion of the wall of a contiguous cell through one or more of the perforations of the duct.
  • n. An affection of the eyelids characterized by an indurated thickening of their edges.
  • n. Same as leucoplacia.
  • n. Callosity.

Etymologies

New Latin tylōsis, from Greek tulōsis, a making callous : tulos, callus; + -ōsis, -osis.
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

  • Crocker had an instance of this nature in a man with tylosis palmæ, in which the skin was cast off every autumn, but the process lasted two months.

    Anomalies and Curiosities of Medicine

  • Crocker had an instance of this nature in a man with tylosis palmae, in which the skin was cast off every autumn, but the process lasted two months.

    Anomalies and Curiosities of Medicine

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