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.

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.
References in periodicals archive ?
As a case in point, Suadeau offered the term pre-embryo, which he said was coined in England in the 1990s to justify research on human embryos.
To aver that the pre-embryo must be protected is absurd and pretentious morality--what I like to call 'hoity-toity morality' - and has less intellectual depth and ethical sway than a child telling one not to step on its imaginary friend's foot.
If the pre-embryos are thawed and destroyed then we're happy," Bart Adams told the AP.
The fourteen-day limit for pre-embryo research coincides with the end of the initial stage of development.
We already knew that a cell or two could be taken from the pre-embryo without harming the developmental process.
Jones & Schrader, supra note 5, at 191 ("[T]he pre-embryo deserves to be treated as a special bit of humanity.
Courts differentiate between the embryo and pre-embryo stages of fertilization.
It is presumed that 'cells and zygotes' should be interpreted as a pre-embryo, as defined above.
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.
The Department of Health wants to change the law so a fertilised egg with damaged DNA could be treated at the pre-embryo stage to avoid potentially deadly disorders such as lung and heart problems.
For more details regarding the delimitation between pre-embryo and embryo, see A.
The mainstream halakhic position is that a pre-embryo is not considered a human being.