side

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side

1. Geometry
a. any line segment forming part of the perimeter of a plane geometric figure
b. another name for face
2. either half of a human or animal body, esp the area around the waist, as divided by the median plane
3. Billiards snooker spin imparted to a ball by striking it off-centre with the cue
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

side

[sīd]
(mathematics)
One of the line segments that bound a polygon.
One of the two rays that extend from the vertex of an angle.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

lee side

The side of a mountain or an island away from the direction from which wind is blowing. On the water, from the observer's viewpoint, the lee is the direction to which the wind is blowing. Also called the leeward (pronounced “loo-ard”) side.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
Metal is the preferred frame material for these patients to allow easy readjustment if the spectacles become misshapen through wear and tear; the sides can also be shortened, be converted to curl sides for active children, or loop end sides for the very young.
in the children's ophthalmic frames, Norville took first place with the Blitz Kids purple metal full rim with curl sides (13C2).
Centrostyle also offer designs with corrugated sides with many havin; nylon inside for comfort and can be supplied with curl sides, bands and flexible end tips (see Figure 2).