WordReference Random House Unabridged Dictionary of American English © 2025
zy•gos•i•ty
(zī gos′i tē, zi-),USA pronunciation n. [Genetics.]
- Geneticsthe characterization of an individual's hereditary traits in terms of gene pairing in the zygote from which it developed. Cf. homozygous, heterozygous.
- Geneticsthe characterization of twinning and multiple births in terms of the combination of alleles for particular hereditary traits. Cf. monozygotic, dizygotic.
- zyg- + -osity or zygos(is) + -ity 1945–50
'zygosity' also found in these entries (note: many are not synonyms or translations):