Dictionary.com

progesterone

[ proh-jes-tuh-rohn ]
/ proʊˈdʒɛs təˌroʊn /
Save This Word!

noun
Biochemistry. a hormone, C21H30O2, that prepares the uterus for the fertilized ovum and maintains pregnancy.
Pharmacology. a commercial form of this compound, obtained from the corpus luteum of pregnant sows or synthesized: used in the treatment of dysfunctional uterine bleeding, dysmenorrhea, threatened or recurrent abortion, etc.

COMPARE MEANINGS

Click for a side-by-side comparison of meanings. Use the word comparison feature to learn the differences between similar and commonly confused words.
QUIZ
WILL YOU SAIL OR STUMBLE ON THESE GRAMMAR QUESTIONS?
Smoothly step over to these common grammar mistakes that trip many people up. Good luck!
Question 1 of 7
Fill in the blank: I can’t figure out _____ gave me this gift.

Origin of progesterone

1930–35; blend of progestin and luteosterone (<German Luteosteron, synonymous with progestin, equivalent to Luteo-luteo- (representing corpus luteum) + -steron (see sterol, -one))
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use progesterone in a sentence

British Dictionary definitions for progesterone

progesterone
/ (prəʊˈdʒɛstəˌrəʊn) /

noun
a steroid hormone, secreted mainly by the corpus luteum in the ovary, that prepares and maintains the uterus for pregnancy. Formula: C 21 H 30 O 2Also called: corpus luteum hormone

Word Origin for progesterone

C20: from pro- 1 + ge (station) + ster (ol) + -one
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for progesterone

progesterone
[ prō-jĕstə-rōn′ ]

A steroid hormone that prepares the uterus for pregnancy, maintains pregnancy, and promotes development of the mammary glands. The main sources of progesterone are the ovary and the placenta. Chemical formula: C21H30O2.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK