Procellaria aequinoctialis pro·cel·la·riaaequinoctialis uncommon noun 1. large black petrel of southern seas having a white mark on the chin Synonymswhite-chinned petrelProcellaria aequinoctialis Related words Broader terms petrel Parts Procellaria WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
