stout tropical swamp fern (especially tropical America) having large fronds with golden yellow sporangia covering the undersides

an unsaturated liquid carboxylic acid used in the manufacture of acrylic resins

an unsaturated liquid carboxylic acid used in the manufacture of acrylic resins

an unsaturated liquid carboxylic acid used in the manufacture of acrylic resins

an unsaturated liquid carboxylic acid used in the manufacture of acrylic resins

an unsaturated liquid carboxylic acid used in the manufacture of acrylic resins

an unsaturated liquid carboxylic acid used in the manufacture of acrylic resins

polymerized from acrylonitrile

polymerized from acrylonitrile

used especially by artists