angiotensin I

n the smallest whole number or a numeral representing this number n one of four playing cards in a deck having a single pip on its face n someone who is dazzlingly skilled in any field n proteolytic enzyme that converts angiotensin I into angiotensin II n a major strategic headquarters of NATO

n a drug (trade name Capoten) that blocks the formation of angiotensin in the kidneys resulting in vasodilation

an ACE inhibitor (trade name Vasotec) that blocks the formation of angiotensin in the kidney and so results in vasodilation