A paronychia is an infection of the skin that surrounds a toenail or fingernail. Acute paronychia â This usually appears as a sudden, very painful area of swelling, warmth and redness around a fingernail or toenail, usually after an injury to the area.
Definition of 'reflector'. reflector (rÉªflektÉÊ³ ) A reflector is a small piece of specially patterned glass or plastic which is fitted to the back of a bicycle or car or to a post beside the road, and which glows when light shines on it. A reflector is a type of telescope which uses a mirror that is shaped like a ball.
diffuser. n. 1. a person or thing that diffuses. 2. (Furniture) a part of a lighting fixture consisting of a translucent or frosted covering or of a rough reflector: used to scatter the light and prevent glare.3. (Electronics) a cone, wedge, or baffle placed in front of the diaphragm of a loudspeaker to diffuse the sound waves.4. (Aeronautics) a duct, esp in a wind tunnel or jet engine, that widens gradually in the direction of flow to reduce the speed and increase the pressure of the air or fluid. 5.. (Electronics) a cone, wedge, or baffle placed in front of the diaphragm of a loudspeaker to diffuse the sound waves. 4. (Aeronautics) a duct, esp in a wind tunnel or jet engine, that widens gradually in the direction of flow to reduce the speed and increase the pressure of the air or fluid. 5.