noun
- Any measuring instrument that uses interference patterns to make accurate measurements of waves. .
Interferometer and Udometer
WordNet 3.0 © 2006 by Princeton University
(n.) An instrument for measuring small movements, distances or displacements by means of the interference of two beams of light; -- called also refractometer.
Webster's Revised Unabridged Dictionary
noun
- Gauge consisting of an instrument to measure the quantity of precipitation.
- synonyms: rain gauge, rain gage, pluviometer
WordNet 3.0 © 2006 by Princeton University
(n.) A rain gauge.
Webster's Revised Unabridged Dictionary