additivityn.
/ˌadᵻˈtɪvᵻti/, U.S. /ˌædəˈtɪvᵻdi/ The condition or property of being additive.
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the world > relative properties > number > arithmetic or algebraic operations > [noun] > summing or addition > quality of being addible
addibility1690
additivity1904
1904 Science 4 Nov. 586/1 This additivity of properties persists up to fairly high concentrations.
1946 Nature 28 Sept. 452/2 Renard's assumption on the additivity of the spectra seems premature.
1964 W. Heisenberg in Cambr. Rev. 24 Oct. 51/2 It is only on account of the long range and of the additivity of the forces from different sources that a reasonable ‘classical limit’ of the photon field operator exists.
2000 Nature 10 Feb. 594/2 Hoyle..does not object to the additivity of costs; it is the cost of a single substitution that he regards as an illusion.
This entry has been updated (OED Third Edition, November 2010; most recently modified version published online December 2021).
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n.1904