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Any of several optical, acoustic, or radio-frequency instruments that use interference phenomena between a reference wave and an experimental wave or between two parts of an experimental wave to determine wavelengths and wave velocities, measure very small distances and thicknesses, and calculate indices of refraction.

in′ter·fer′o·met′ric (-fîr′ə-mĕt′rĭk) adj.
in′ter·fer′o·met′ri·cal·ly adv.
in′ter·fe·rom′e·try n.


1. (General Physics) physics any acoustic, optical, or microwave instrument that uses interference patterns or fringes to make accurate measurements of wavelength, wave velocity, distance, etc
2. (Astronomy) astronomy a radio or optical array consisting of two or more telescopes separated by a known distance and connected so that the radiation from a source in space undergoes interference, enabling the source to be imaged or the position of the source to be accurately determined
interferometric adj
ˌinterˌferoˈmetrically adv
ˌinterferˈometry n


(ˌɪn tər fəˈrɒm ɪ tər)

1. a device that splits light into two or more beams, usu. by reflection, and then brings them together to produce interference, used to measure wavelength, index of refraction, and astronomical distances.
2. an optical instrument for measuring the angular separation of double stars or the diameter of giant stars by means of the interference phenomena of light they emit.
in`ter•fer`o•met′ric (-ˌfɪər əˈmɛ trɪk) adj.
in`ter•fer`o•met′ri•cal•ly, adv.
in`ter•fer•om′e•try, n.


an instrument that measures wavelengths, minute distances, or the refractivity of lenses by comparison of interference patterns generated by the splitting and reuniting of a beam of light passed through a lens. — interferometry, n.
See also: Instruments
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.interferometer - any measuring instrument that uses interference patterns to make accurate measurements of waves
measuring device, measuring instrument, measuring system - instrument that shows the extent or amount or quantity or degree of something
References in periodicals archive ?
Improved sensitivity- achieved by using interferometric detection techniques rather than less sensitive 'speckle pattern' detection technology.
Paper topics include review talks such as the accretion disks of young starts, diagnostics of disks around hot stars, modeling the structure of hot star disks, formation of hot star disks, arts and phenomenology, winds from hot star disks, links, and interferometric studies.
Mirasol, based on Interferometric Modulation (IMOD), harnesses ambient light sources to provide a display that does not need backlighting.
They provide comparison of the main interferometric systems and review the underlying Fourier theory.
The project utilizes data previously collected with the Company's proprietary Interferometric Synthetic Aperture Radar (IFSAR) technology.
Contract award: providing an interferometric microscope field and infrared 200-300 mm.
The new UBHS-PH2 headset will be the first to feature an Interferometric Modulation (IMOD) display from QUALCOMM.
Model dB-3710C TWT Amplifiers Are Integrated with Intermap Proprietary Interferometric Synthetic Aperture Radar Technology to Collect 3D Radar Mapping Data
Tenders are invited for Real Time 3-Axis Interferometric Displacement Sensor
16 /PRNewswire-USNewswire/ -- NASA's Aeronautics Research Mission Directorate, Fundamental Aeronautics Program, Washington, has awarded approximately $256,000 to The George Washington University, Washington, for work described in their NASA research announcement proposal entitled "Simultaneous Dual-broadband Coherent Anti-Stokes Raman Scattering (CARS) and Interferometric Rayleigh Scattering.
Contract notice: Interferometric Air Bearing Stage.