Where does “airtightness” come from?

airtightness (English) comes from English airtight, from English aïr, from Middle English aire, from Old French air, from Latin āēr, from Ancient Greek ἀήρ, from Ancient Greek auhḗr.

airtightness (English): The quality of being airtight

Definitions

  1. The quality of being airtight

Ancestry of “airtightness”, step by step

airtightness traces back through two separate lines of ancestry.

via English airtight

StepLanguageWordMeaning
1EnglishairtightImpermeable to air or other gases; Having no weak...
2Englishaïr
3Middle Englishaireair
4Old Frenchairair mixture of gases that make up the earth's atmosphere
5Latināērair
6Ancient Greekἀήρmist; air; wind
7Ancient Greekauhḗr

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Ancient Greek auhḗrEvery word from Ancient Greek ἀήρEvery word from Latin āēr