tro·pine (tr??p?n?, -p?n) also tro·pin (-p?n)n. A white, crystalline, poisonous alkaloid, C8H15NO, obtained chiefly by hydrolysis of atropine.[From atropine.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.tropin (?tr??p?n) na hormone released in the body by a certain gland and which produces a response in other glands, stimulating the release of other hormonesCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
-tropin
-tropin also -trophinsuff. Hormone affecting the growth or function of a certain kind of cell, tissue, or organ: gonadotropin[Variant -tropin : -trop(ic) + -in. Variant -trophin : -troph(ic) + -in (with subsequent mutual influence between the two suffixes, with the result that that modern scientific usage treats them as variants of a single suffix).]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.