The AI-powered English dictionary
third-person singular simple present unseals, present participle unsealing, simple past and past participle unsealed
(transitive) To break the seal of (something) in order to open it. examples
(intransitive) To open by having a seal broken. quotations examples
But it's just the equalising of pressure as the vault door unseals.
2017, Paul Crilley, Clockwork City: Delphic Division 2