food material characteristic food physical quality Damion Dooley's note: these categories need to be mapped over to PATO phenotypic categories, with a suitable treatment of mixtures of solids that are divided into parts. The physical state of the food product (liquid, semiliquid, semisolid, or solid). Solid food products are further subdivided by shape or form. Terms are provided for products that have both liquid and solid components or that incorporate air or other gases. [FDA CFSAN 1995] requires discussion