A Reproductive Lexicon


Ownership of this website has been transferred from Northwestern University to Michigan State University.
Please note that some site information may be inaccurate while adjustments to reflect this organizational change are made.

MOOC Advertisement

Learn More:
Get An Introduction to Reproduction

Learn more about the science of reproduction. Dr. Teresa Woodruff, creator of Repropedia, is offering a free online course exploring the world of reproduction.

Get Started!


A miscarriage is a spontaneous termination or abortion of pregnancy prior to 20 weeks of fetal development. Miscarriages are the most common complication during the first trimester, and they can occur due to hormonal, genetic, uterine, or reproductive abnormalities.

Also Known As: