Noun | 1. | genus Diomedea - type of the Diomedeidae bird genus - a genus of birds Diomedeidae, family Diomedeidae - albatrosses Diomedea exulans, wandering albatross - very large albatross; white with wide black wings black-footed albatross, Diomedea nigripes, gooney, gooney bird, goonie, goony - a variety of albatross with black feet |