də̇ˈfyüzə(r) sometimes dīˈ- noun
( -s )
: one that diffuses: as
a. : a chamber surrounding a turbine wheel commonly provided with stationary vanes into which the fluid is discharged
b. : a device (as a reflector placed above an electric lamp or a vaned shield placed below) to distribute the light from a concentrated source uniformly
c. : a device through which air or other gas is admitted in minute bubbles into sewage or water undergoing treatment
d. : a device for diffusing spray or vapor (as in a carburetor)
e. : a device for reducing the velocity and increasing the static pressure of a fluid passing through a system, usually made in the form of a chamber having an effective cross section which increases in the direction of flow
f. : a screen (as of cloth or frosted glass) used to soften lighting (as in a motion-picture or television studio)
g. : a device (as a louver with slats at different angles) for deflecting air in various directions from an outlet to effect mixture with room air (as for heating or cooling a room)