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Ummál og þvermál hrings ‎(Circumference and diameter of a circle).


From Old Norse ummál. See the Old Norse ummæli (Icelandic ummæli). Compare the Icelandic um ‎(around) + mál ‎(measurement) and mæla ‎(measure).


ummál n ‎(genitive singular ummáls, nominative plural ummál)

  1. (mathematics) a perimeter; (sum of the distance of all the lengths of the sides of an object)
  2. (mathematics) a circumference; (length of a line that bounds a circle or other two-dimensional figure)

Derived terms[edit]