Where does “hypermutagenesis” come from?

hypermutagenesis (English) comes from English mutagenesis, from English muta-, from English mutation, from Middle English mutacioun, from Old French mutacion, from Latin mutatio, from Latin -tiō, from Latin dissertātiō — small stone, pebble; gravel, rubble.

Ancestry of “hypermutagenesis”, step by step

hypermutagenesis traces back through two separate lines of ancestry.

via English mutagenesis

StepLanguageWordMeaning
1EnglishmutagenesisThe creation or formation of a genetic mutation
2Englishmuta-Relating to mutation
3EnglishmutationAny alteration or change; Any heritable change of...
4Middle Englishmutaciounalteration, change, modification
5Old Frenchmutacionalteration; change
6Latinmutatiochange, alteration; interchange, exchange
7Latin-tiōtion, -ation, -ing
8Latindissertātiō(spoken) dissertation, discourse, disquisition
9Latindissertusarranged, disposed; explained
10Latindissereresecond-person singular future passive indicative...
11Latindis-asunder, apart, in two; reversal, removal;...
12Latincalceusshoe
13Latincalxlimestone; chalk; the finish line
14Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via English hyper

StepLanguageWordMeaning
1Englishhyperhyperactive; energetic; overly diligent;...
Every word from Ancient Greek χάλιξEvery word from Latin -tiōEvery word from Latin dis-