1. Something, such as an intermediate course of action, that occupies a position or represents a condition midway between extremes. 2. An intervening substance through which something else is transmitted or carried on. 3. The train was the usual medium of transportation in those days. 4. A means of mass communication, such as newpapers, magazines, radio, or television. 5. The group of journalists and others who constitute the communications industry and profession. 6. psychic 7. A surrounding environment in which something functions and thrives. 8. The substance in which a specific organism lives and thrives. 9. A culture medium. 10. the medium of lithography. 11. oils as a medium. 12. A solvent with which paint is thinned to the proper consistency. 13. A filtering substance, such as filter paper. 14. x 22 inches. 15. average
