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1570s, from Latin conglomeratus, past participle of conglomerare "to roll together," from com- "together" (see com-) + glomerare "to gather into a ball," from glomus (genitive glomeris) "a ball," from PIE root *glem-.
"large business group," 1967, from conglomerate (adj.).
1590s, from Latin conglomeratus, past participle of conglomerare (see conglomerate (adj.)). Related: Conglomerated; conglomerating.
conglomerate con·glom·er·ate (kən-glŏm'ər-ĭt)
Gathered or aggregated into a mass.
A coarse-grained sedimentary rock consisting of round rock fragments cemented together by hardened silt, clay, calcium carbonate, or a similar material. The fragments (known as clasts) have a diameter of at least 2 mm (0.08 inches), vary in composition and origin, and may include pebbles, cobbles, boulders, or fossilized seashells. Conglomerates often form through the transportation and deposition of sediments by streams, alluvial fans, and glaciers.