verb
(transitive) To make (something) perpetual; to make (something) continue for an indefinite time; also, to preserve (something) from extinction or oblivion.
(transitive) To prolong the existence of (something) by repetition; to reinforce.
adjective
(archaic except poetic) Perpetual, or made perpetual; continued for an indefinite time.
Mac + Safari
iPhone + iPad
Google Chrome
Mozilla Firefox
Opera
Microsoft Edge