ty|lo|sis «ty LOH sihs», noun, plural -ses «-seez».
1. Botany. a growth from a cell wall into the cavity of woody tissue: »
In some woods the parenchyma cells, before they die, push bladderlike outgrowths called tyloses into the vessels, blocking them and making water conduction impossible (New Scientist).
2. Medicine. a) an inflammatory disease in which the eyelids become thick and hard around the edges. b) a disease of the mucous membrane of the lips and mouth, characterized by whitish spots.
╂[< Greek týlōsis formation of a callus < týlē callus]
Useful english dictionary. 2012.