aplacental


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Related to aplacental: ovoviviparous, viviparous

aplacental

 [a″plah-sen´t'l]
having no placenta.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

a·pla·cen·tal

(ā'pla-sen'tăl),
Without a placenta; denoting the monotremes (which lay eggs and have no placenta) and the marsupials (which have a transitory simple yolk-sac placenta).
Farlex Partner Medical Dictionary © Farlex 2012

aplacental

(ā′plə-sĕn′tl)
adj.
Having no placenta, as marsupials and monotremes.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
References in periodicals archive ?
blainville) (Risso, 1826) is an aplacental viviparous shark living in tropical and temperate waters, whose distribution range includes the Mediterranean, the Eastern Atlantic from the Bay of Biscay to South Africa, and the Western Atlantic from the United States to Argentina (Cannizzaro et al., 1995; Froese and Pauly, 2010).
Morphological and endocrine correlates of the reproductive cycle of the aplacental viviparous dogfish, Squalus acanthias.