/kol"euh fayn'/ , n. Mineral.
a massive, cryptocrystalline variety of apatite that is the principal component of phosphate rock and fossil bone.
Also, collophanite /keuh lof"euh nuyt', kol"euh feuh-/ .
[ 1915-20; Kollophan, equiv. to Gk koll ( a ) glue + -o- -O- + -phan -PHANE ]