Both Uses of
liberate
in
The Mark of Athena
- His dark sunken eyes reminded Percy of photos he'd seen of liberated prisoners-of-war, which Percy guessed Nico basically was.†
p. 536.6 *liberated = set free
- But you know what prize awaits, if you can liberate it.†
p. 401.1
Definitions:
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(1)
(liberate) to set free -- as from prison, political oppression, persecution, expectations...
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(2)
(meaning too rare to warrant focus) meaning too rare to warrant focus:
In chemistry liberate can specifically mean to free something (such as a gas) from a compound through chemical reaction. Even more rarely, liberate is used in a humorous way as a synonym for stealing (taking without permission).