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