Word Meanings - PLACENTA - Book Publishers vocabulary database

The vascular appendage which connects the fetus with the parent, and is cast off in parturition with the afterbirth. Note: In most mammals the placenta is principally developed from the allantois and chorion, and tufts of vascular villi

Additional info about word: PLACENTA

The vascular appendage which connects the fetus with the parent, and is cast off in parturition with the afterbirth. Note: In most mammals the placenta is principally developed from the allantois and chorion, and tufts of vascular villi on its surface penetrate the blood vessels of the parental uterus, and thus establish a nutritive and excretory connection between the blood of the fetus and that of the parent, though the blood itself does not flow from one to the other.

Related words: (words related to PLACENTA)

• PARENTHETIC; PARENTHETICAL
  1. Of the nature of a parenthesis; pertaining to, or expressed in, or as in, a parenthesis; as, a parenthetical clause; a parenthetic remark. A parenthetical observation of Moses himself. Hales. 2. Using or containing parentheses.
• PARENTHESIS
  One of the curved lines which inclose a parenthetic word or phrase. Note: Parenthesis, in technical grammar, is that part of a sentence which is inclosed within the recognized sign; but many phrases and sentences which are punctuated by commas
• VASCULARITY
  The quality or state of being vascular.
• VILLIFORM
  Having the form or appearance of villi; like close-set fibers, either hard or soft; as, the teeth of perch are villiform.
• PARENTATION
  Something done or said in honor of the dead; obsequies. Abp. Potter.
• PLACENTARY
  Having reference to the placenta; as, the placentary system of classification.
• PARENT
  1. One who begets, or brings forth, offspring; a father or a mother. Children, obey your parents in the Lord. Eph. vi. 1. 2. That which produces; cause; source; author; begetter; as, idleness is the parent of vice. Regular industry is the parent
• DEVELOPMENT
  The series of changes which animal and vegetable organisms undergo in their passage from the embryonic state to maturity, from a lower to a higher state of organization. The act or process of changing or expanding an expression into another
• CHORION
  The outer membrane of seeds of plants. (more info) The outer membrane which invests the fetus in the womb; also, the similar membrane investing many ova at certain stages of development. The true skin, or cutis.
• WHICHEVER; WHICHSOEVER
  Whether one or another; whether one or the other; which; that one which; as, whichever road you take, it will lead you to town.
• ALLANTOIS; ALLANTOID
  A membranous appendage of the embryos of mammals, birds, and reptiles, -- in mammals serving to connect the fetus with the parent; the urinary vesicle.
• DEVELOPABLE
  Capable of being developed. J. Peile. Developable surface , a surface described by a moving right line, and such that consecutive positions of the generator intersect each other. Hence, the surface can be developed into a plane.
• WHICH
  the root of hwa who + lic body; hence properly, of what sort or kind; akin to OS. hwilik which, OFries. hwelik, D. welk, G. welch, OHG. welih, hwelih, Icel. hvilikr, Dan. & Sw. hvilken, Goth. hwileiks, 1. Of what sort or kind; what; what a; who.
• PLACENTA
  The vascular appendage which connects the fetus with the parent, and is cast off in parturition with the afterbirth. Note: In most mammals the placenta is principally developed from the allantois and chorion, and tufts of vascular villi
• DEVELOP
  To change the form of, as of an algebraic expression, by executing certain indicated operations without changing the value. (more info) voleper, to envelop, perh. from L. volup agreeably, delightfully, and hence orig., to make agreeable
• APPENDAGE
  A subordinate or subsidiary part or organ; an external organ or limb, esp. of the articulates. Antennæ and other appendages used for feeling. Carpenter. Syn. -- Addition; adjunct; concomitant. (more info) 1. Something appended to, or accompanying,
• DEVELOPMENTAL
  Pertaining to, or characteristic of, the process of development; as, the developmental power of a germ. Carpenter.
• PARENTLESS
  Deprived of parents.
• PRINCIPALLY
  In a principal manner; primarily; above all; chiefly; mainly.
• APPENDAGED
  Furnished with, or supplemented by, an appendage.
• TRANSPARENT
  transparere to be transparent; L. trans across, through + parere to 1. Having the property of transmitting rays of light, so that bodies can be distinctly seen through; pervious to light; diaphanous; pellucid; as, transparent glass; a transparent
• NONDEVELOPMENT
  Failure or lack of development.
• APPARENTLY
  1. Visibly. Hobbes. 2. Plainly; clearly; manifestly; evidently. If he should scorn me so apparently. Shak. 3. Seemingly; in appearance; as, a man may be apparently friendly, yet malicious in heart.
• APLACENTAL
  Belonging to the Aplacentata; without placenta.
• SUBTRANSPARENT
  Not perfectly transparent.