aggregato-|ægrɪˌgeɪtəʊ|combining form of aggregate a., in which it is used adverbially with another adjective; = aggregately-, in an aggregate manner; as in aggregato-glomerate, -gemmate.1848Dana Zoophytes vii. 115 Simple or aggregato-gemmate.Ibid. 361 Quite simple, ramose or aggregato-glomerate.