adj 1  :  occurring as a sequela of disease or injury  2  :  of, relating to, forming, or taken in a sequence < contraceptive pills> 
n :  an oral contraceptive in which the pills taken during approximately the first three weeks contain only estrogen and those taken during the rest of the cycle contain both estrogen and progestogen .
 
 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.