(ˈʌndəˌsiːlɪŋ) n (Automotive Engineering) Brit the process of applying a coating of underseal to a motor vehicleTranslations
undersealing
subsealing
The placing of a waterproof material under an existing pavement, or the like, to prevent the flow of water through the pavement and to fill the voids under the pavement.ThesaurusSeeunderseal