Where does “vaportight” come from?

vaportight (English) comes from English vapor, from Middle English vapour, from Anglo-Norman vapour, from Old French vapor, from Latin vapōr — steam, exhalation, vapour; smoke.

vaportight (English): impermeable to vapor

Definitions

  1. impermeable to vapor

Ancestry of “vaportight”, step by step

vaportight traces back through two separate lines of ancestry.

via English vapor

StepLanguageWordMeaning
1EnglishvaporCloudy diffused matter such as mist, steam or...
2Middle EnglishvapourFumes or vapour; a visible gaseous emission;...
3Anglo-Normanvapour—
4Old FrenchvaporAlternative form of vapeur
5Latinvapōrsteam, exhalation, vapour; smoke

via English tight

StepLanguageWordMeaning
1EnglishtightFirmly held together; compact; not loose or open;...
2Middle Englishtight—
3Old Englishþiht—
Every word from Latin vapōr →Every word from Old French vapor →Every word from Anglo-Norman vapour →