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.

---

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

---

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 plugged with tyloses, collected in a few rows.

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)

Pores in early wood moderately large, not abundant, nearly round, filled with tyloses.

From Studies of Trees by Levison, Jacob Joshua

Pores are usually open though tyloses may occur, Fig.

From Studies of Trees by Levison, Jacob Joshua

If pores appear, their arrangement, both in the early wood and in the late wood, should be carefully noted; also whether the pores are open or filled with a froth-like substance known as tyloses.

From Studies of Trees by Levison, Jacob Joshua