Rocketry. any vapor loss from the oxidizer or fuel in a rocket during countdown.
2. Also called boiling-off /ˈbɔɪlɪŋˈɔf, -ˈɒf/ [boi-ling-awf, -of] Show IPA . Textiles. a.
the process of degumming silk.
the process of removing sizing, wax, impurities, etc., from fabric by scouring.
1955–60; noun use of verb phrase boil off