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Dictionary: het·er·o·dyne   (hĕt'ər-ə-dīn') pronunciation
Single, Double and Triple Beam with 0.1nm resolution up to 500kHz

Having alternating currents of two different frequencies that are combined to produce two new frequencies, the sum and difference of the original frequencies, either of which may be used in radio or television receivers by proper tuning or filtering.

tr.v., -dyned, -dyn·ing, -dynes.
To combine (a radio-frequency wave) with a locally generated wave of different frequency in order to produce a new frequency equal to the sum or difference of the two.

[HETERO- + -dyne, power, frequency (from Greek dunamis, power; see dynamic).]

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WordNet: heterodyne
Note: click on a word meaning below to see its connections and related words.

The verb has one meaning:

Meaning #1: combine (a radio frequency wave) with a locally generated wave of a different frequency so as to produce a new frequency equal to the sum or the difference between the two

The adjective heterodyne has one meaning:

Meaning #1: (electronics) produced by heterodyning two oscillations
  Pertains to noun: beat (meaning #4)

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Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.  Read more
WordNet. WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved.  Read more