internal secretion Hear it!

internal secretion definition

internal secretion

a substance secreted directly into the blood, as by an endocrine gland; hormone

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.