pre-embryo


Also found in: Dictionary, Wikipedia.

pre-embryo

(prē-ĕm′brē-ō′)
n. pl. pre-embry·os
A fertilized ovum up to 14 days old, before it becomes implanted in the uterus.

pre-em′bry·on′ic (-ŏn′ĭk) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

pre-embryo

(prē″ ĕm′ brē-ō)
The morula and blastocyst stages produced by the division of the zygote until the formation of the embryo proper at the appearance of the primitive streak about 14 days after fertilization.
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
1992) ("We conclude that preembryos are not, strictly speaking, either 'persons' or 'property,' but occupy an interim category that entitles them to special respect because of their potential for human life."); Jones & Schrader, supra note 5, at 191 ("[T]he pre-embryo deserves to be treated as a special bit of humanity...
(117.) Courts differentiate between the embryo and pre-embryo stages of fertilization.
In Israel, Professor Steinberg is a member of the National Bioethics Council, the chairman of the Dying Patient Committee, and was chairman of the Organ Transplantation Committee, chairman of the Altruistic Live-Organ Donations Committee, a member of the Brain-Death Criteria Committee, a member of The Status of the Fetus and Pre-Embryo Committee, and chairman of the Pathological Specimens Committee.
(105) Thus, before fourteen days, some scientists call a blastocyst a "pre-embryo. (106) Battling against the scientific viewpoint is the more religious belief that life begins at the moment of conception.
It also gets a new identity--cleaved egg, ovasome, truck, pre-embryo, pluripotent stem cells, etc.--to distinguish it from other human embryos deemed worthy of life.
Therapeutic cloning is another scientific process where after the fusion and development of pre-embryo, eggs are not planted in a womb, rather they are killed.
(24) The fertilized ovum (now a zygote or pre-embryo) is then placed in the mother's uterus or fallopian tubes with a catheter.
Prior to implantation, the entity has been termed a "pre-embryo," but this term (perhaps originating in botany) is not often used today.
Wolter, Reflections on the Moral Status of the Pre-Embryo, 51 THEOLOGICAL STUDIES 603, 610-14 (1990).
Wolter, "Reflections on the Moral Status of the Pre-Embryo," Theological Studies 51 (1990): 603-26.
One is the over-familiar "philosophical" definition of person which pompously excludes certain kinds of human life from the class of "beings worthy of respect." The other is a definition according to which early embryos are called pre-embryos. Just as pre-Christians are not Christians and pre-marital sex isn't sex in marriage, so too a pre-embryo sounds like a non-embryo.
Trainor, Right of Husband, Wife, or Other Party to Custody of Frozen Embryo, Pre-embryo, or Pre-zygote in Event of Divorce, Death, or Other Circumstances, 87 A.L.R.5th 253 (2001) (discussing spouse or other party's right to use gametes for reproductive purposes after death, divorce, or other changes in circumstances that affect consent).