Nanohydroxyapatite (nano-HAp) is a nanomaterial form of hydroxyapatite, a naturally occurring mineral form of calcium apatite with the formula Ca5(PO4)3(OH). In nanotechnology, nano-HAp is characterized by its nanoscale dimensions, typically ranging from 1 to 100 nanometers. Its unique properties make it highly suitable for various biomedical and industrial applications.