• AEGEAN (noun) The noun AEGEAN has 1 sense: 1. an arm of the Mediterranean between Greece and Turkey; a main trade route for the ancient civilizations of Crete and Greece and Rome and Persia. Familiarity information: AEGEAN used as a noun is very rare. • AEGEAN (adjective) The adjective AEGEAN has 2 senses: 1. of or relating to or characteristic of the prehistoric Aegean civilization. 2. of or relating to or bordering the Aegean Sea. Familiarity information: AEGEAN used as an adjective is rare.