Definify.com

Webster 1913 Edition

Noun.

[Gr. [GREEK] angle +

-meter

: cf. F.

goniomètre

An instrument for measuring angles, especially the angles of crystals, or the inclination of planes.

Noun.

[Gr. angle, and measure.] An instrument for measuring solid angles, or the inclination of planes.

goniometer ‎(plural goniometers)

A device used to measure the angles of crystals.
A radio direction finder.
(medicine) An arthrometer (device for measuring the arc or range of mobility of a joint).

device to measure crystals

radio direction finder

arthrometer — see arthrometer