Where does “Parsic” come from?

Parsic (English) comes from English Parsi, from Classical Persian پَارْسِی, from Persian پارس, from French paris, from French patrice, from Latin Pātricius, from Latin -icius, from Latin -icus — -y, -ic.

Ancestry of “Parsic”, step by step

Parsic traces back through two separate lines of ancestry.

via English Parsi

StepLanguageWordMeaning
1EnglishParsiA member of the larger of the two Zoroastrian...
2Classical Persianپَارْسِی
3PersianپارسPersian; a pard; an animal smaller than a leopard...
4Frenchparisplural of pari
5Frenchpatricepatrician
6LatinPātriciuspatrician, noble
7Latin-icius-itious
8Latin-icusbelonging to; derived from; of or pertaining to;...
9Ancient Greek-ικόςof or pertaining to, in the manner of; -ic
10Ancient Greek-κόςforms adjectives with the sense of 'of or...
11Proto-Indo-European-ḱos-y, -ic

via English ic

StepLanguageWordMeaning
1Englishicrelated or pertaining to; having the character of
Every word from Proto-Indo-European -ḱosEvery word from Ancient Greek -ικόςEvery word from Latin -icus