12-Letter Words Starting: TR_P

• Any of a class of polyhedra that have kite-shaped faces and are dual polyhedra of antiprisms.

• A deltoidal icositetrahedron.

• a sporozoan in the active feeding stage of its life cycle

• The mutual exchange of (fluid) food between individuals, especially in social insects.

• an amino acid that occurs in proteins; is essential for growth and normal metabolism; a precursor of niacin