Where does “suction point” come from?

suction point (English) comes from English suction, from Vulgar Latin suctio, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere, from Latin dis-, from Latin calceus — small stone, pebble; gravel, rubble.

suction point (English): A hole in the floor exposing a pit beneath the foundation of a building, used for soil suction in radon mitigation

Definitions

  1. A hole in the floor exposing a pit beneath the foundation of a building, used for soil suction in radon mitigation

Ancestry of “suction point”, step by step

suction point traces back through two separate lines of ancestry.

via English suction

StepLanguageWordMeaning
1EnglishsuctionA force which pushes matter from one space into...
2Vulgar Latinsuctio
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 point

StepLanguageWordMeaning
1EnglishpointA discrete division of something; A sharp...
2Middle Englishpoint
3Old Frenchpointa sting; a prick; moment; time; dot
4Latinpūnctumpoint
5Latinpunctuspricked, punctured, pierced, having been pricked;...
6Latin-tusForms the past participle of verbs; Forms...
7Proto-Italic-tus
8Proto-Indo-European-tusDerives action nouns from verb roots
Every word from Ancient Greek χάλιξEvery word from Latin -tiōEvery word from Latin dis-