hypertension(n = noun.state) high blood pressure - a common disorder in which blood pressure remains abnormally high (a reading of 140/90 mm Hg or greater);
is a kind of cardiovascular disease
has particulars: essential hypertension, hyperpiesia, hyperpiesis, malignant hypertension, secondary hypertension, white-coat hypertension
Antonym: hypotension

   abnormally high blood pressure; especially, the chronic condition associated with persistent high blood pressure. [PJC]

hypertension, n.
1 abnormally high blood pressure.
2 a state of great emotional tension.

Derivative:
hypertensive adj.

essential hypertension, malignant hypertension, portal hypertension, secondary hypertension, white-coat hypertension