Where does “posttransfusional” come from?

posttransfusional (English) comes from English transfusional, from English transfusion, from Latin transfusio, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere, from Latin dis- — small stone, pebble; gravel, rubble.

Ancestry of “posttransfusional”, step by step

posttransfusional traces back through two separate lines of ancestry.

via English transfusional

StepLanguageWordMeaning
1EnglishtransfusionalOf, pertaining to, or involving transfusion
2EnglishtransfusionThe transfer of blood or blood products from one...
3Latintransfusiopouring out or off, decanting, transfusion
4Latin-tiōtion, -ation, -ing
5Latindissertātiō(spoken) dissertation, discourse, disquisition
6Latindissertusarranged, disposed; explained
7Latindissereresecond-person singular future passive indicative...
8Latindis-asunder, apart, in two; reversal, removal;...
9Latincalceusshoe
10Latincalxlimestone; chalk; the finish line
11Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

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—
Every word from Ancient Greek χάλιξ →Every word from Latin -tiō →Every word from Latin dis- →