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.
A reflecting telescope, aka reflector, or a refracting telescope, aka refractor, both use something called an objective, a lens or mirror that focuses light. Since telescopes are all about great visuals, let's walk through this lesson with lots of images, otherwise what I'm about to say won't make too much sense.