granolithic
Concise Oxford English Dictionary © 2008 Oxford University Press:
granolithic /ˌgranə(ʊ)ˈlɪθɪk/
▶adjective (of concrete) containing fine granite chippings or crushed granite, used to render floors and surfaces.
– origin C19: from grano- (irregular combining form from L. granum ‘grain’) + Gk lithos ‘stone’ + -ic.
'granolithic' also found in these Oxford entries:

