Where does “flank eruption” come from?

flank eruption (English) comes from English eruption, from Middle French éruption, from Latin eruptio, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere, from Latin dis- — small stone, pebble; gravel, rubble.

flank eruption (English): A volcanic eruption which occurs on the flanks of a volcano, rather than its summit

Definitions

  1. A volcanic eruption which occurs on the flanks of a volcano, rather than its summit

Ancestry of “flank eruption”, step by step

flank eruption traces back through two separate lines of ancestry.

via English eruption

StepLanguageWordMeaning
1EnglisheruptionA violent ejection, such as the spurting out of...
2Middle Frenchéruption
3Latineruptioan eruption; outburst; onrush, onslaught
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 flank

StepLanguageWordMeaning
1EnglishflankTo attack the flank of; To defend the flank of;...
2Middle Englishflanc
3Old Englishflancflank
4Old Frenchflancside; flank
5Frankishhlanca
6Proto-Germanichlankazflexible; bendsome; slim; slender; sleek
7Proto-Indo-Europeankleng-to turn, bend; to bend, turn, wind, twist
Every word from Ancient Greek χάλιξ