non-reductionn.

1820 W. Faraday Let. 26 June in M. Faraday Corr. (1991) I. 198 The non-effect is the non-reduction of titanium. We have tortured menachanite, pure oxide of titanium, the carbonate, &c., in many ways, but have never yet been able to reduce it.

1888 Dict. National Biogr. XV. 108/1 Lord John Russell moved amendment condemning ‘the disenfranchisement’..of the borough freeholders, and the non-reduction of the borough franchise.

1937 C. D. Darlington Rec. Adv. in Cytol. (ed. 2) ix. 399 The spermatids are originally tetraploid through double non-reduction and by three polymitotic divisions become 32x.

1964 Sociometry 27 228 This possibility of non-reduction merely places a caution..on the statement that the predictions of the separate role-playing sessions do not appear to be any improvement on the total role-playing section.

1996 Amer. Jrnl. Bot. 83 1321/1 Two main modes for origin of the polyploidy, somatic doubling in mitosis and non-reduction in meiosis, have been accepted in flowering plant [sic].