trait 1 In genetics, a genetically determined characteristic. 2 In medicine, a condition in the heterozygous state of a recessive disorder, as in sickle cell trait. 3 In psychology, a characteristic pattern of behavior.
trait 1 In genetics, a genetically determined characteristic. 2 In medicine, a condition in the heterozygous state of a recessive disorder, as in sickle cell trait. 3 In psychology, a characteristic pattern of behavior.