tylosis

[ tahy-loh-sis ]

noun

, Botany.

, plural ty·lo·ses [tahy-, loh, -seez].

1. a bubblelike formation in the cavity of tracheids or vessels in the wood of trees, consisting of protoplasm intruded from adjacent parenchyma cells.

tylosis

/ taɪˈləʊsɪs /

noun

1. botany a bladder-like outgrowth from certain cells in woody tissue that extends into and blocks adjacent conducting xylem cells

Word History and Origins

Origin of tylosis¹

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

Word History and Origins

Origin of tylosis¹

C19: from Greek tulōsis, from tulos knob or tulē callus + -osis