• (a.) Having no albumen about the embryo; -- said of certain seeds.
Ex`al·bu'mi·nous adjective [ Prefix ex- + albumen .] (Botany) Having no albumen about the embryo; -- said of certain seeds. 
Seeds without albumen or endosperm.
exalbuminous 1. Having no albumen around the embryo; said of certain seeds. 2. Without albumen (starchy and other nutritive material in a seed, stored as endosperm inside the embryo sac, or as perisperm in the surrounding nucellar cells; any deposit of nutritive material accompanying the embryo).