Employee exposure to bloodborne pathogens from blood and Other Potentially Infectious Materials (OPIM) because employees are not using Universal Precautions. 1  Bloodborne pathogens are pathogenic microorganisms that are present in human blood and can cause disease in humans.
atonality. n. 1. (Music, other) absence of or disregard for an established musical key in a composition. 2. (Music, other) the principles of composition embodying this and providing a radical alternative to the diatonic system.
A brief history of atonality [edit]. Composer Arnold Schoenberg is generally seen as the first composer to fully embrace 'atonality', although a number of other composers (such as Bartok and Scriabin) had been moving in that direction for some time.