Modifiers matching membrane:

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

Simple categories matching refractory:

• material,
• fiber,
• metal,
• membrane,
• elements,
• mineral,
• oxide,
• rock,
• carrier,
• compound,
• grain,
• body,
• vessel,
• matter,
• phosphate,
• medium,
• component,
• filling,
• clay,
• fabric,
• earth,
• contaminant,
• property,
• aggregate,
• shield,
• article,
• powder,
• coating,
• part,
• constituent,
• substance,
• carbide,
• macromolecule,
• item,
• product,
• complex,
• residue,
• alloy,
• wire,
• fraction,
• brick,
• ore,
• silicide,
• system,
• nonmetal,
• molecule,
• lining,
• element,
• surface,
• cement,
• shape,
• substrate,
• nitride,
• conductor,
• solid,
• particle,
• filler,
• fibre,