be seized of

be seized of (third-person singular simple present is seized of, present participle being seized of, simple past was seized of, past participle been seized of)

1. To remain in consideration of a matter.
2. To reserve the right to reconsider a matter, as in a deliberative assembly.

   Decides to remain seized of the matter

• Used in the resolutions of an assembly, most commonly in the Security Council of the United Nations. In this context, it means that, while the Security Council is seized of a matter, no other organ of the United Nations may legally take it up, as under Article 12 of the UN Charter.
• May also be written as "actively seized of" with identical meaning.

seize