S: (n) unit of measurement, unit (any division of quantity accepted as a standard of measurement or exchange) "the dollar is the United States unit of currency"; "a unit of wheat is a bushel"; "change per unit volume"
S: (v) cross, traverse, span, sweep (to cover or extend over an area or time period) "Rivers traverse the valley floor"; "The parking lot spans 3 acres"; "The novel spans three centuries"