roundness

English

Etymology

From Middle English roundnesse, equivalent to round +‎ -ness.

Noun

roundness (usually uncountable, plural roundnesses)

1. The quality or degree of being round.
   1. (engineering, manufacturing) The degree of accuracy to which a manufactured object intended to be round fulfills that requirement; it is measured by parameters such as TIR (total indicator reading).

      Coordinate terms: flatness, sphericity

   2. Synonym of rotundity.
      • 1886 October – 1887 January, H[enry] Rider Haggard, She: A History of Adventure, London: Longmans, Green, and Co., published 1887, →OCLC:

        I gazed at her arm. Where was its wonderful roundness and beauty? It was getting thin and angular.