The acronym "SAT" can refer to several different meanings depending on the context in which it is used. Here are some possible definitions:
1) Scholastic Aptitude Test (SAT): This is a standardized test widely used for college admissions in the United States. It measures critical reading, math and writing skills.
2) Society of Automotive Engineers (SAE): SAE International is a professional organization dedicated to advancing the engineering of mobility systems. The acronym "SAT" can refer to their technical standards board or any other committee within the society.
3) Satellite: This term refers to an artificial satellite placed into orbit around the Earth for various purposes such as communication, weather forecasting, navigation and scientific research.