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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 par·fo·cal /ˌpɑrˈfokəl/
 等焦距

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 par·fo·cal /(ˈ)pɑrˈfokəl/ 形容詞

From: Webster's Revised Unabridged Dictionary (1913)

 Par·fo·cal a.   Opt. With the lower focal points all in the same plane; -- said of sets of eyepieces so mounted that they may be interchanged without varying the focus of the instrument (as a microscope or telescope) with which they are used. “the convenience of a microscope with parfocal objective lenses”
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