wat? The topic is pretty clearly vectors in the mathematical sense (1), as coined by Hamilton in 1846 (2), which predates the FDA by 60 years (3)
(1) https://github.com/pgvector/pgvector
(2) https://www.maths.tcd.ie/pub/HistMath/People/Hamilton/OnQuat...
(3) https://www.fda.gov/about-fda/changes-science-law-and-regula...