方ほう形けい骨こつほうけいこつじ字FuriganaMeanings1nounquadrate boneanatomy›Anatomical term for a bone in the skull of many vertebrates, including birds, reptiles, and amphibians. In humans, it is a small bone in the middle ear (incus).See also: 方骨方ほう形けい骨こつは爬は虫ちゅう類
