zeptometre

See also: zeptomètre and zepto-metre

English

Etymology

From zepto- +‎ metre.

Noun

zeptometre (plural zeptometres)

  2. (metrology) An SI unit of length equal to 10−21 metres. Symbol: zm
    Alternative forms: zm (symbol), zeptometer (US)
    Holonyms: attometre < femtometre < picometre < nanometre < micrometre < millimetre < centimetre < decimetre < metre < kilometre < megametre < gigametre < terametre < petametre < exametre < zettametre < yottametre < ronnametre < quettametre
    Meronym: yoctometre

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