Where does “fissionist” come from?

fissionist (English) comes from English fission, from Latin fissiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere, from Latin dis-, from Latin calceus — small stone, pebble; gravel, rubble.

fissionist (English): A scientist who works on nuclear fission

Definitions

  1. A scientist who works on nuclear fission

Ancestry of “fissionist”, step by step

fissionist traces back through two separate lines of ancestry.

via English fission

StepLanguageWordMeaning
1EnglishfissionThe process whereby one item splits to become...
2LatinfissiōThe act of breaking up or dividing
3Latin-tiōtion, -ation, -ing
4Latindissertātiō(spoken) dissertation, discourse, disquisition
5Latindissertusarranged, disposed; explained
6Latindissereresecond-person singular future passive indicative...
7Latindis-asunder, apart, in two; reversal, removal;...
8Latincalceusshoe
9Latincalxlimestone; chalk; the finish line
10Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via English ist

StepLanguageWordMeaning
1EnglishistA practitioner or supporter of an ism
2English-istAdded to words to form nouns denoting
3Old French-iste
4Latin-ista-ist; one who practises or believes
5Ancient Greek-ιστήςAlternative form of -τής; -ist
6Ancient Greek-τήςAppended to verbs to form agent nouns
7Proto-Hellenic-tās
Every word from Ancient Greek χάλιξEvery word from Latin -tiōEvery word from Latin dis-