fractile adjective 1noun 1forms 3 adjective1 •Describing the quality of a sedimentary stone as it relates to the sediments to cohesively bond without fracturing.A stone with a low fractile strength lacks tensile strength and will crack or crumble under stress or pressure. noun1 •The value of a distribution for which some fraction of the sample lies below.The q-quantile is the same as the (1/q)-fractile.The median is the .5-fractile. formsfractiles · more fractile · most fractile