Definify.com
Webster 1913 Edition
Hermetically
Her-met′ic-al-ly
,adv.
1.
In an hermetical manner; chemically.
Boyle.
2.
By fusion, so as to form an air-tight closure.
☞ A vessel or tube is hermetically sealed when it is closed completely against the passage of air or other fluid by fusing the extremity; – sometimes less properly applied to any air-tight closure.
Webster 1828 Edition
Hermetically
HERMET'ICALLY
,adv.