Definition of norethynodrel in English:

norethynodrel

(also noretynodrel)

Pronunciation /ˌnɔːrɛˈθʌɪnədrɛl/

noun

Pharmacology
  • A synthetic steroid hormone with actions similar to those of progesterone, used chiefly in combination with oestrogen in oral contraceptives; (17α)-17-hydroxy-19-norpregn-5(10)-en-20-yn-3-one, C₂₀ H₂₆ O₂.

    Noretynodrel is the Recommended International Nonproprietary Name (rINN) of the compound.

Origin

1950s; earliest use found in Endocrinology. From nor- + ethyn- + -odrel, of unknown origin.