geodimetern.

Brit.

/ˌdʒiːə(ʊ)ˈdɪmᵻtə/, U.S.

/ˌdʒioʊˈdɪmədər/

Origin: Formed within English, as an initialism. Etymon: English geodetic distance meter.

Etymology: < the initial letters of geodetic distance meter.

Surveying.

A proprietary name for: an instrument for measuring large distances precisely, in which the travel time and change in phase of a modulated light beam emitted by the instrument (typically by a laser) and returned by a reflector placed at a distant point is used to measure the distance to that point.

ΚΠ

1959 J. Clendinning Princ. & Use Surv. Instruments (ed. 2) ix. 196 Two separate instruments..are available. The first is the geodimeter developed by Dr. E. Bergstrand in Sweden and the second is the tellurometer... The geodimeter operates with ordinary light waves, but the tellurometer operates with radio waves.

1971 Nature 20 Aug. 526/1 Fifty-eight survey lines making up a total distance of about 157 km, were measured with a geodimeter.

1976 Physics Bull. July 283/2 The Chinese..are using laser geodimeters and tiltmeters to monitor relative motions across faults.

2009 J. S. Monroe & R. Wicander Changing Earth (ed. 5) v. 128/2 A geodimeter uses a laser beam to measure horizontal distances, which change as a volcano inflates.

This is a new entry (OED Third Edition, March 2012; most recently modified version published online March 2022).

单词	geodimeter
释义	geodimetern. Brit. /ˌdʒiːə(ʊ)ˈdɪmᵻtə/, U.S. /ˌdʒioʊˈdɪmədər/ Origin: Formed within English, as an initialism. Etymon: English geodetic distance meter. Etymology: < the initial letters of geodetic distance meter. Surveying. A proprietary name for: an instrument for measuring large distances precisely, in which the travel time and change in phase of a modulated light beam emitted by the instrument (typically by a laser) and returned by a reflector placed at a distant point is used to measure the distance to that point. ΚΠ 1959 J. Clendinning Princ. & Use Surv. Instruments (ed. 2) ix. 196 Two separate instruments..are available. The first is the geodimeter developed by Dr. E. Bergstrand in Sweden and the second is the tellurometer... The geodimeter operates with ordinary light waves, but the tellurometer operates with radio waves. 1971 Nature 20 Aug. 526/1 Fifty-eight survey lines making up a total distance of about 157 km, were measured with a geodimeter. 1976 Physics Bull. July 283/2 The Chinese..are using laser geodimeters and tiltmeters to monitor relative motions across faults. 2009 J. S. Monroe & R. Wicander Changing Earth (ed. 5) v. 128/2 A geodimeter uses a laser beam to measure horizontal distances, which change as a volcano inflates. This is a new entry (OED Third Edition, March 2012; most recently modified version published online March 2022). < n.1959
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