from The American Heritage® Dictionary of the English Language, 4th Edition
- n. One that diffuses, as:
- n. A light fixture, such as a frosted globe, that spreads light evenly.
- n. A medium that scatters light, used in photography to soften shadows.
- n. A device, such as a cone or baffle, placed in front of a loudspeaker diaphragm to diffuse the sound waves.
- n. A flow passage in a wind tunnel that decelerates a stream of gas or liquid from a high to a low velocity.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any person or thing that diffuses
- n. A device designed to diffuse a scent efficiently
- n. Any device that or spreads out or scatters light, making the light appear softer
- n. A shaped section of a car's underbody which improves the car's aerodynamic properties
- n. A mechanical device that is designed to control the characteristics of a fluid at the entrance to a thermodynamic open system
- n. An aerating device consisting of a membrane with fine pores, through which air is blown to generate small bubbles
- n. A cooking item that can be placed above a stove heating element or burner to separate the cooking utensil from the heat source
from the GNU version of the Collaborative International Dictionary of English
- n. One who, or that which, diffuses.
from The Century Dictionary and Cyclopedia
- n. One who or that which diffuses; specifically, in physics, an apparatus consisting of a number of thin metal plates, designed to conduct away the heat of a thermoelectric battery by exposing a large surface to the air. Also spelled diffusor.
- n. In electricity, a reflector placed above an arc-lamp for the purpose of more uniformly distributing its light.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. baffle that distributes sound waves evenly
- n. optical device that distributes the light of a lamp evenly
diffuse + -er (Wiktionary)