Merriam-Webster's Collegiate® Dictionary, 11th Edition
CONGLOMERATE
I. adjective see: clam
Date: 1572
made up of parts from various sources or of various kinds,
II. verb (-ated; -ating)
Date: 1642
intransitive verb to gather into a mass or coherent whole , transitive verb accumulate , conglomerative adjective conglomerator noun
III. noun
Date: 1818
a composite mass or mixture, a widely diversified corporation, conglomeratic adjective