tylosis

American  

[tahy-loh-sis] / taɪˈloʊ sɪs /

Often tylose

noun

Botany.

tyloses plural

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

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tylosis British  

/ taɪˈləʊsɪs /

noun

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

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Other Word Forms

Noun Inflected Forms

• tyloses
  plural

Etymology

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

Example Sentences

See Examples For:

tylosis tyloses

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.

From Anomalies and Curiosities of Medicine by Pyle, Walter L. (Walter Lytle)

Pores in early wood in a rather narrow band, round, variable in size, densely filled with tyloses.

From Studies of Trees by Levison, Jacob Joshua

In white oak the vessels of the heartwood especially are closed, very generally by ingrowths called tyloses.

From Seasoning of Wood by Wagner, J. B. (Joseph Bernard)

The presence of tyloses in white oak makes even this a difficult problem.

From Seasoning of Wood by Wagner, J. B. (Joseph Bernard)

When a tree becomes infected it is stimulated to produce tyloses or swellings in the vessels of the wood.

From Northern Nut Growers Association Report of the Proceedings at the 43rd Annual Meeting Rockport, Indiana, August 25, 26 and 27, 1952 by Northern Nut Growers Association

Pores are usually open though tyloses may occur, Fig.

From Studies of Trees by Levison, Jacob Joshua