diploidy
Genetics term referring to the state of having two complete sets of chromosomes, typical of somatic cells.
Human somatic cells are diploid.
Diploid organisms have two copies of each chromosome.
Ploidy; the general concept of chromosome set number, of which diploidy is a specific case.
Compound of 二倍 (double) + 性 (nature/property), a straightforward calque or adaptation of the Western scientific term 'diploidy'.