Where does “persymmetrical” come from?

persymmetrical (English) comes from English Per, from English Person, from Middle English persoun, from Old French persone, from Medieval Latin persona, from Latin persōna, from Etruscan 𐌘𐌄𐌓𐌔𐌖, from Ancient Greek πρόσωπον — to see; eye.

Ancestry of “persymmetrical”, step by step

persymmetrical traces back through two separate lines of ancestry.

via English Per

StepLanguageWordMeaning
1EnglishPerFor each
2EnglishPersonAn individual who has been granted personhood; usually a human being
3Middle Englishpersounperson
4Old Frenchpersoneperson; individual; rector of a parish; someone;...
5Medieval Latinpersonaparson, person; mask; character
6Latinpersōnamask
7Etruscan𐌘𐌄𐌓𐌔𐌖a mask; a masked individual, often performing in...
8Ancient Greekπρόσωπονface, visage, countenance; front; mask
9Ancient Greekὤψto the eye; in the face; eye
10Proto-Hellenicókʷseye
11Proto-Indo-Europeanh₃ókʷseye
12Proto-Indo-Europeanh₃ekʷ-to see; eye

via English symmetrical

StepLanguageWordMeaning
1EnglishsymmetricalExhibiting symmetry; having harmonious or...
2EnglishsymmetryExact correspondence on either side of a dividing...
3Latinsymmetriasymmetry, proportion
4Ancient Greekσυμμετρίαcommensurability; symmetry, due proportion; a...
5Ancient Greekσύμμετροςsymmetrical
6Ancient Greekμέτρονsomething used to measure: measure, rule, weight;...
7Ancient Greek-τρονForms instrument nouns
8Proto-Hellenic-tronForms instrument nouns from verb stems
9Proto-Indo-European-tromForms nouns denoting a tool or instrument
Every word from Proto-Indo-European h₃ekʷ-Every word from Proto-Indo-European h₃ókʷsEvery word from Proto-Hellenic ókʷs