absolute unit

/AE1 B S AH0 L UW0 T Y UW0 N AH0 T/
noun
  1. 1

    A unit of measurement that can be defined in terms of mass, length, and time.

noun
  1. 1

    A man or woman of exceptional body mass, size, and/or corpulence.

  2. 2

    (by extension) Anything exceptionally large for its type.

Source: https://en.wiktionary.org/wiki/absolute%20unit