euploid, a. Biol.
(ˈjuːplɔɪd)
[a. G. euploid (G. Täckholm 1922, in Acta Horti Berg. VII. 234), f. eu- + -ploid.]
Of a cell, an organism, or tissue: having each of the different chromosomes of the set in equal numbers; having an exact multiple of the haploid chromosome number. So ˈeuploidy, the condition or state of being euploid.
| 1926 L. W. Sharp Introd. Cytol. (ed. 2) xvii. 385 When the total number [of chromosomes] is..an exact multiple of the fundamental haploid number the term euploid..may be employed. Ibid. 387 (caption) The diploid chromosome complements of various species of Rosa, illustrating euploidy. 1933 Times Lit. Suppl. 9 Nov. 779/1 Euploidy (regular multiplication of the basic chromosome number) is characteristic of cultivated apples. 1956 Nature 25 Feb. 384/2 By developing more constant euploid (or polyploid) cells. |