MAP ABBREVIATION is a term used to describe the abbreviations found on maps. The abbreviations LAT, ISL, RTE, TPK, and TWP are all commonly used on maps. LAT stands for latitude, which is a measure of how far north or south of the equator a location is. ISL stands for island, which is a landmass surrounded by water. RTE stands for route, which is a path or course taken from one place to another. TPK stands for turnpike, which is a highway with tolls. TWP stands for township, which is an administrative division of a county.