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1. An optical instrument for measuring crystal angles, as between crystal faces.
2. A radio receiver and directional antenna used as a system to determine the angular direction of incoming radio signals.

[Greek gōniā, angle; see genu- in Indo-European roots + -meter.]

go′ni·o·met′ric (-nē-ə-mĕt′rĭk), go′ni·o·met′ri·cal adj.
go′ni·om′e·try n.


1. (General Physics) an instrument for measuring the angles between the faces of a crystal
2. (Electronics) an instrument consisting of a transformer circuit connected to two directional aerials, used to determine the bearing of a distant radio station
[C18: via French from Greek gōnia angle]
goniometric, ˌgonioˈmetrical adj
ˌgonioˈmetrically adv
ˌgoniˈometry n


(ˌgoʊ niˈɒm ɪ tər)

an instrument for measuring solid angles, as of crystals.
[1760–70; < Greek gōní(a) angle (compare -gon) + -o- + -meter]
go`ni•o•met′ric (-əˈmɛ trɪk) go`ni•o•met′ri•cal, adj.
go`ni•o•met′ri•cal•ly, adv.
go`ni•om′e•try, n.


an instrument for measuring angles, especially those of solid bodies.
See also: Instruments
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.goniometer - direction finder that determines the angular direction of incoming radio signalsgoniometer - direction finder that determines the angular direction of incoming radio signals
direction finder - radio; determines the direction of incoming radio waves
References in periodicals archive ?
The contract is to build a system goniometrical VHF RDF (radio direction finder) to locate ships in distress in the maritime area of ?