[ zahy-gos-i-tee, zi- ]
/ zaɪˈgɒs ɪ ti, zɪ- /

noun Genetics.

the characterization of an individual's hereditary traits in terms of gene pairing in the zygote from which it developed.Compare homozygous, heterozygous.
the characterization of twinning and multiple births in terms of the combination of alleles for particular hereditary traits.

Origin of zygosity

1945–50; zyg- + -osity or zygos(is) + -ity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for zygosity

[ zī-gŏsĭ-tē ]


The genetic condition of a zygote, especially with respect to its being a homozygote or a heterozygote.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.