1. 1  any of several threadlike bodies, consisting of chromatin, that carry the genes in a linear order: the human species has 23 pairs, designated 1 to 22 in order of decreasing size and X and Y for the female and male sex chromosomes respectively.
data source name (DSN) A data source name (DSN) is a data structure that contains the information about a specific database that an Open Database Connectivity ( ODBC ) driver needs in order to connect to it.
DSD is an acronym for Disorders of Sex Development.. Defined as congenital conditions in which development of chromosomal, gonadal, or anatomical sex is atypical, DSD was designed to replace archaic terms true hermaphrodite and male and female pseudo-hermaphrodite, as well as the imprecise term intersex..