noun see parfocal

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • parfocality — noun The condition of being parfocal …   Wiktionary

  • parfocal — adjective Etymology: Latin par equal + English focal Date: circa 1886 being or having lenses or lens sets (as eyepieces) with the corresponding focal points all in the same plane • parfocality noun • parfocalize transitive verb …   New Collegiate Dictionary

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