al Ÿ ba Ÿ tross \ ‘albeŸtros\ n : any of a number of large web-footed seabirds that are related to the petrels, that form a family (Diomedeidae) of the order Procellariiformes, and that include the largest of seabirds, being capable of long-continued flight and often appearing at great distances from land chiefly over…