Of or belonging to the infraclass Eutheria, a division of mammals to which all the placental mammals belong.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "eutherian" in a sentence
"Molecular and morphological supertrees for eutherian (placental) mammals."
"The mouse is relatively distant both from humans (another eutherian) and opossum (a marsupial)."
"CZ: Ref: Lillegraven 1987 The origin of eutherian mammals"