Jargon, or an informal term, that is often found in technology research reports.
2. In medicine, amyloid precursor protein (APP), which is a large transmembrane glycoprotein expressed on the cell surface and of uncertain function.It may be cleaved on the cell surface to a soluble form. Alternatively, cleavage may follow endocytosis and in some cases then yields 40 to 43 abnormal amino acid peptides, which aggregate to form Ab amyloid, associated with Alzheimer's disease.
-ple, -pli, -plic, -plicat, -plicit, -plicate, -plication, -ply (page 1)
An app is not the same as computer software; such as, the operating systems, server processes, libraries which exist to support application programs, and utility programs.
checkout:
"The technology giant introduced Google Wallet, a mobile application that will allow consumers to pay at a store by waving their cellphones at a retailer's terminal instead of using a credit card [or cash]."
"The app, for the Android operating system also will enable users to redeem special coupons and earn loyalty points."