Appendage Grain is a term used to describe the two parts of a grain of wheat. The first part, AWN, is an acronym for Awns, which are the long, stiff hairs that grow from the husk of a grain of wheat. The second part, ARISTA, is a Latin word meaning 'ear of grain' and refers to the small, pointed appendage at the top of the grain. Together, these two parts make up the Appendage Grain of a wheat grain.