tread

tread

1. the outer part of a tyre or wheel that makes contact with the road, esp the grooved surface of a pneumatic tyre

2. the part of a rail that wheels touch

3. Vet science an injury to a horse's foot caused by the opposite foot, or the foot of another horse

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

tread

1. The horizontal upper surface of a step; includes the rounded edge or nosing which extends over the riser.

See also: Step

2. The horizontal upper surface of a step; includes the rounded edge or nosing which extends over the riser.

Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

tread

[tred]

(civil engineering)

The horizontal part of a step in a staircase.

The distance between two successive risers in a staircase.

(engineering)

The part of a wheel or tire that bears on the road or rail.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

tread

The horizontal surface of a step; often has a rounded edge that extends beyond the upright face of the riser below it.

McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.