tylosis
[ tahy-loh-sis ]
/ taɪˈloʊ sɪs /
noun, plural ty·lo·ses [tahy-loh-seez] /taɪˈloʊ siz/. Botany.
a bubblelike formation in the cavity of tracheids or vessels in the wood of trees, consisting of protoplasm intruded from adjacent parenchyma cells.
Often
ty·lose
[tahy-lohs, tahy-lohs] /ˈtaɪ loʊs, taɪˈloʊs/.
Origin of tylosis
1875–80; < Greek
týlōsis act of making callous, equivalent to
tylō-, variant stem of
tyloûn to make callous, hard, derivative of
týlos callus, lump, knob +
-sis
-sis
Words nearby tylosis
British Dictionary definitions for tylosis
tylosis
/ (taɪˈləʊsɪs) /
noun
botany
a bladder-like outgrowth from certain cells in woody tissue that extends into and blocks adjacent conducting xylem cells
Word Origin for tylosis
C19: from Greek
tulōsis, from
tulos knob or
tulē callus +
-osis
Medical definitions for tylosis
tylosis
[ tī-lō′-sĭs ]
n. pl. ty•lo•ses (-sēz)
Inflammation of the eyelids, characterized by thickening and hardening of the edges.
A thickening of the horny layer of the skin as a result of chronic pressure or friction.