noun
Meaning 1
A synthetic progestogen C23H31NO3 (trademark Ortho Tri-Cyclen) that is used in combination with an estrogen (as ethinylestradiol) in birth control pills.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
Topics: medicine, pharmacology, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided