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.
Definition [edit]. Atonal music is a generalizing term used to define music that seems to lack a clear tonal center. Nearly all music in the western classical tradition is considered 'tonal': that is, its harmonic structure is primarily triadic and hierarchically organized around a prominent tonal center.