[beetle] Tylosis is a genus of beetles in the family Cerambycidae, containing the following species: ...[botany] Tylosis (plural: Tyloses) is the physiological process and the resulting occlusion in the xylem of woody plants as response to injury or as protection from decay in heartwood. It is an essential process in the Compartmentalization Of Decay In Trees (CODIT) and other woody plants, forming walls one and two of CODIT. ==Process== As a...
A balloon-like outgrowth from a xylem parenchyma cell that expands into and blocks the lumen of a xylem vessel or a tracheid. (Pl. tyloses.) 
• (n.) An intrusion of one vegetable cell into the cavity of another, sometimes forming there an irregular mass of cells.
(ti-lo´sis) callus formation. adj., tylot´ic., adj.
An overgrowth of the protoplast of a parenchyma cell into an adjacent xylem vessel or tracheid 
A balloon-like overgrowth of the protoplast of a parenchyma cell into an adjacent xylem vessel.
Type: Term Pronunciation: tī-lō′sis, -sēz Definitions: 1. Formation of a callus (tyloma).
Tylosis: A callus or thickening. See: Tylosis with esophageal cancer.
a bubblelike formation in the cavity of tracheids or vessels in the wood of trees, consisting of protoplasm intruded from adjacent parenchyma cells.