I. ˈ ̷ ̷| ̷ ̷ adjective
Etymology: air (III) + proof
1. : airtight
2. : made impervious to air
II. transitive verb
1. : to make airtight
2. : to protect from the injurious action of air
I. ˈ ̷ ̷| ̷ ̷ adjective
Etymology: air (III) + proof
1. : airtight
2. : made impervious to air
II. transitive verb
1. : to make airtight
2. : to protect from the injurious action of air
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012