Optical
Part of speech: adjective
Definition: Of, or relating to sight; visual Designed to assist or enhance sight Of, or relating to optics Of, or relating to visible light Incorporating light-sensitive devices
Example sentence: There's nothing special about wireless networks except that wireless capacity is sometimes less than what you can get, for example, from optical fiber.
Physics
Part of speech: verb
Definition: To cure or heal.
Part of speech: noun
Definition: The branch of science concerned with the study of properties and interactions of space, time, matter and energy.Of or pertaining to the physical aspects of a phenomena or a system, especially those studied in physics.A medicine or drug, especially a cathartic or purgative.
Example sentence: Magnetism, as you recall from physics class, is a powerful force that causes certain items to be attracted to refrigerators.