taper

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taper

Engineering (in conical parts) the amount of variation in the diameter per unit of length

taper

[′tā·pər]
(aerospace engineering)
An airfoil feature in which either the thickness or the chord length or both decrease from the root to the tip.
(electricity)
Continuous or gradual change in electrical properties with mechanical position such as rotation or length; for example, continuous change of cross section of a waveguide, or distribution of resistance in a potentiometer.

taper

A gradual diminution of thickness in an elongated object, as in a spire.
References in periodicals archive ?
Today's forecast calls for heavy rain in the late morning and afternoon, tapering off on Sunday.
4 billion in 1995, then fell to $885 million in 1997, before spiking to $4 billion in 2001 and $8 billion in 2002, and finally tapering off to $6 billion in 2003.
Major Armenian immigration to Glendale started in the 1970s, and has continued in spurts until tapering off recently, said Bianca Manoukian, spokeswoman for the Armenian Cultural Foundation.
Output has surged in step with demand, and imports are tapering off.