<unk>  is the number of homologous sets of chromosomes in a biological cell. The<unk>  of cells can vary within an organism.  In humans, most cells are diploid (containing one set of chromosomes from each parent), but sex cells (sperm and egg) are haploid.  In contrast, tetraploidy (four sets of chromosomes) is a type of polyploidy and is common in plants, and not uncommon in amphibians, reptiles, and various species of insects.
The number of chromosomes in one of the mutually-homologous sets is called the monoploid number (x).  This is the same number for every set in every cell of a given organism.
Euploidy is the state of a cell or organism having an integral multiple of the monoploid number, possibly excluding the sex-determining chromosomes.  For example, a human cell has 46 chromosomes, which is an integer multiple of the monoploid number, 23. A human with abnormal, but integral, multiples of this full set (e.g. 69 chromosomes) would also be considered as euploid. Aneuploidy is the state of not having euploidy.  In humans, examples include having a single extra chromosome (such as Down syndrome), or missing a chromosome (such as Turner syndrome).  Aneuploidy is not normally considered<unk>  but -somy, such as trisomy or monosomy.
Ploidy
Tanner stage
Density
Fertility
Intentionality
Pregnancy category
Tonality
Sexual maturity