sellar bedeutet auf Englisch

seal [sealed, sealing, seals]▼(to place a seal on (a document))
verb
[UK: siːl] [US: ˈsiːl]My lips are sealed. = Mis labios están sellados.

size [sized, sizing, sizes]▼(to apply primer to a surface which is to be painted)
verb
[UK: saɪz] [US: ˈsaɪz]

unseal [unsealed, unsealing, unseals]▼(to break the seal of (something) in order to open it)
verb
[UK: ən.ˈsiːl] [US: ən.ˈsiːl]

postmark [postmarked, postmarking, postmarks]▼(to apply a postmark on)
verb
[UK: ˈpəʊst.mɑːk] [US: ˈpoʊst.mɑːk]