Sliding \Slid"ing\, a.

1. That slides or slips; gliding; moving smoothly.

2. Slippery; elusory. [Obs.]

That sliding science hath me made so bare. --Chaucer.

Sliding friction (Mech.), the resistance one body meets with in sliding along the surface of another, as distinguished from rolling friction.

Sliding gunter (Naut.), a topmast arranged with metallic fittings so as to be hoisted and lowered by means of halyards.

Sliding keel (Naut), a movable keel, similar to a centeboard.

Sliding pair. (Mech.) See the Note under Pair, n., 7.

Sliding rule. Same as Slide rule, under Slide, n.

Sliding scale.
   (a) A scale for raising or lowering imposts in proportion to the fall or rise of prices.
   (b) A variable scale of wages or of prices.
   (c) A slide rule.

Sliding ways (Naut.), the timber guides used in launching a vessel.

Source: Webster's Revised Unabridged Dictionary (1913)