RhymeZone: hct definitions

Definitions of Hct:

noun: Abbreviation of hematocrit/haematocrit.
noun: Abbreviation of hydrochlorothiazide. [(pharmacology) A diuretic drug, 6-chloro-3,4-dihydro-2H-1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide, that inhibits the kidneys' ability to retain water and lowers blood pressure.]

(Definitions from Wiktionary)