Where does “posttherapeutical” come from?

posttherapeutical (English) comes from English post, from Middle French poste, from Italian posta, from Italian posto, from Latin positus, from Latin pōnō, from Proto-Italic poznō, from Proto-Italic pozinō.

Ancestry of “posttherapeutical”, step by step

posttherapeutical traces back through two separate lines of ancestry.

via English post

StepLanguageWordMeaning
1EnglishpostA long dowel or plank protruding from the ground;...
2Middle Frenchposte—
3Italianpostamail, post; post office; stakes
4Italianpostoplace, spot
5Latinpositusplaced; ordained
6Latinpōnōto place; to put; to lay
7Proto-Italicpoznō—
8Proto-Italicpozinō—
9Proto-Italicsinō—

via English therapeutical

StepLanguageWordMeaning
1Englishtherapeuticaltherapeutic; Such an agent
2EnglishtherapeuticOf, or relating to therapy; Having a positive...
3New Latintherapeuticuscuring, healing
4Ancient Greekθεραπευτικόςattentive, helpful, obliging, curative
5Ancient GreekθεραπευτήςOne who waits upon another; attendant
6Ancient Greek-τήςAppended to verbs to form agent nouns
7Ancient Greekπεῖραtrial, experiment, attempt
8Proto-Indo-Europeanper-before, in front; first; to go through
9Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Italic sinō →Every word from Proto-Italic pozinō →Every word from Proto-Italic poznō →