Hang - "to apply to a wall"
https://www.merriam-webster.com/dictionary/hang
Horror Vacui
In physics, horror vacui, or plenism, commonly stated as "nature abhors a vacuum",
https://en.wikipedia.org/wiki/Horror_vacui_%28physics%29
Fertilization
https://en.wikipedia.org/wiki/Fertilisation
Zygote
"humans" - Between the stages of fertilization and implantation, the developing embryo is sometimes termed as a preimplantation-conceptus. This stage has also been referred to as the pre-embryo in legal discourses including relevance to the use of embryonic stem cells. In the US the National Institutes of Health has determined that the traditional classification of pre-implantation embryo is still correct.
https://en.wikipedia.org/wiki/Zygote
Case - "an outer covering or housing"
https://www.merriam-webster.com/dictionary/case
Pellucid Membrane
https://en.wikipedia.org/wiki/Zona_pellucida
Gregorian Calendar
This calendar era is based on the traditionally reckoned year of the conception or birth of Jesus, AD counting years from the start of this epoch and BC denoting years before the start of the era. There is no year zero in this scheme; thus the year AD 1 immediately follows the year 1 BC.
Amnion - "Traditionally, the term amnion has been assumed to derive from Ancient Greek ἀμνίον : amníon, 'little lamb', diminutive of ἀμνός : amnós, 'lamb'. "
https://en.wikipedia.org/wiki/Amnion
Tertium Quid - "Tertium quid refers to an unidentified third element that is in combination with two known ones." Latin for "third something"
https://en.wikipedia.org/wiki/Tertium_quid
35 U.S. Code § 101 - Inventions patentable
Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title.
https://www.law.cornell.edu/uscode/text/35/101
1 U.S. Code § 8 - “Person”, “human being”, “child”, and “individual” as including born-alive infant
https://www.law.cornell.edu/uscode/text/1/8