Specifically In zoology, in order to expand over a somewhat large space: as, broadly emarginate; broadly bisinuate, etc. Part is broadly truncate if the truncation is nearly or very corresponding to its biggest width.
In a diverse way.
especially In zoology, in order to extend over a somewhat huge space: as, generally emarginate; generally bisinuate, etc. Part is broadly truncate as soon as the truncation is almost or very equal to its greatest width.