[GovernmentShrinker]

An egg is fertilized and becomes an embryo several days before implantation (implantation being the medical definition of conception). If an egg is fertilized too late, it won't be viable, and either won't implant or will simply fail to keep dividing. Eggs can fertilize slightly before or after the point where they're at the right stage of "ripeness" to form a viable embryo; if that happens, they form a non-viable embryo instead. This guy is nuts enough to worry about this.

[Aquinasfan]

An egg is fertilized and becomes an embryo several days before implantation (implantation being the medical definition of conception).

For those who are unaware, the AMA changed the definition of conception from fertilization to implantation in the early '70s so that the pill would not be categorized as an abortifacient. The pill tends to thin the uterine lining, thus making it difficult for fertilized eggs to implant. Simply stated, the pill can act as abortifacient in addition to acting as a contraceptive.

[MHGinTN]

What? More nonsense from your posting! "An egg is fertilized and becomes an embryo several days before implantation (implantation being the medical definition of conception)." You may find a reference somewhere to support that foolishness (I'm reminded of the specious term 'pre-embryo' used so cavalierly by those trying to defend exploiting embryo aged humans), but your previous reference to IVF refutes your own absurd assertion! You note IVF in a previous post (IVF being the process of conceiving embryos prior to being implanted) then try to toss this contradiction into the discussion? Typical liberal double-speak, trying to change definitions in the middle of the stream to fit your assertions. Implantation IS NOT THE MEDICAL DEFINITION OF CONCEPTION in the IVF process since embryos are conceived 'in vitro'.