adel·ges \əˈdel(ˌ)jēz\noun Usage: capitalized Etymology: New Latin, from adel- + -ges (probably from Greek gē earth) : a genus of aphids related to phylloxerans and feeding chiefly on spruce and balsam on which they often cause damaging and unsightly galls • adel·gid\-_jə̇d\adjective or noun