étanchéité

== French == === Etymology === From étanche +‎ -ité. === Pronunciation === IPA(key): /e.tɑ̃.ʃe.i.te/ === Noun === étanchéité f (plural étanchéités) watertightness; airtightness === Further reading === “étanchéité”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012