Etymology: L, vas + constrigere, to tighten. a decrease in the diameter of a blood vessel. It plays an important role in the control of blood pressure and the distribution of blood throughout the body. Vasoconstriction is triggered by stimulation of the vasomotor constriction center in the medulla.
Wiktionary(0.00 / 0 votes)Rate this definition: 1  typify(Verb) To embody, exemplify; to represent by an image, form, model, or resemblance. 2  typify(Verb) To portray stereotypically. 3  typify(Verb) To serve as a typical or reference specimen.
Expressivity. Definition. noun. The extent to which an expressed gene manifests its effect in an organism. Supplement. Expressivity refers to the influence of an expressed gene in individuals.A variable expressivity pertains to the consistency of the geneâs influence on the individual. It occurs when a phenotype is expressed but to a different degree among individuals with the same genotype.efinition. noun. The extent to which an expressed gene manifests its effect in an organism. Supplement. Expressivity refers to the influence of an expressed gene in individuals.