diplosis

noun Cell Biology.

1. the doubling of the chromosome number by the union of the haploid sets in the union of gametes.

noun

1. biology the doubling of the haploid number of chromosomes that occurs during fusion of gametes to form a diploid zygote

n.

1. The formation of the diploid number of chromosomes during fertilization by the fusion of the nuclei of two haploid gametes.