Modifiers matching membrane:

• multicellular,
• nonporous,
• active,
• imperforate,
• biological,
• refractory,
• logical,
• resonant,
• protective,
• elastic,
• intact,
• excitable,
• macromolecular,
• heterogeneous,
• flexible,
• circular,
• mucosal,
• pliable,
• extracellular,
• metallic,
• collagenous,
• mucous,
• intracellular,
• porous,
• waterproof,
• permeable,
• thin,
• fetal,
• natural,
• continuous,
• epithelial,
• impervious,
• inorganic,
• moist,
• cellular,
• vascular,
• impermeable,
• internal,
• biologic,
• warm,
• sensitive,
• proteinaceous,
• homogeneous,
• thick,
• synthetic,

Simple categories matching porous:

• clothing,
• surface,
• material,
• property,
• oxide,
• rubber,
• fiber,
• stone,
• substrate,
• rock,
• mineral,
• portion,
• sediment,
• product,
• part,
• mold,
• medium,
• electrode,
• space,
• bed,
• solid,
• pad,
• item,
• artifact,
• foodstuff,
• silk,
• leather,
• metal,
• carbon,
• ground,
• molecule,
• paving,
• aquifer,
• unit,
• wood,
• pigment,
• fabric,
• fuel,
• filter,
• polymer,
• gemstone,
• pavement,
• barrier,
• gem,
• packing,
• paper,
• papers,
• masonry,
• formation,
• layer,
• constituent,
• aggregate,
• mass,
• food,
• film,
• system,
• fomite,
• implement,
• floor,
• web,
• obstacle,
• soil,
• enclosure,
• cloth,
• tree,
• area,
• object,
• region,
• softwood,
• sheet,
• substance,
• semiconductor,
• bag,
• body,
• container,
• hose,
• fibre,
• sorbent,
• carrier,
• particle,
• clothes,
• insulation,
• filler,
• thing,
• support,
• coating,
• foam,
• article,
• compound,
• structure,
• furnishing,
• flooring,
• powder,
• hardwood,
• tissue,
• tile,
• wall,
• membrane,