Webster Dictionary(0.00 / 0 votes)Rate this definition: 1  Perspire(verb) to excrete matter through the skin; esp., to excrete fluids through the pores of the skin; to sweat. 2  Perspire(verb) to be evacuated or excreted, or to exude, through the pores of the skin; as, a fluid perspires.
Introduction to NAICS. The North American Industry Classification System (NAICS) is the standard used by Federal statistical agencies in classifying business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. business economy.
The remaining codes, if any, comprise at least 10 percent of the firm's annual revenue. NAICS Codes. The North American Industry Classification System was introduced in 1997 as a replacement for SIC Codes and now serves as the standard for the three NAFTA countries of Mexico, Canada and the U.S.