Printing in East Asia evolved from ink rubbings made on paper or cloth from texts on stone tables in China during the Han dynasty. Mechanical woodblock printing on paper started in China during the Tang dynasty before the 8th century CE. Use of woodblock printing quickly spread to other East Asian countries. While the Chinese used only clay and wood movable type at first, use of metal movable type was pioneered in Korea by the 13th century. The Western-style printing press became known in East A
Definition of 'overhead projector'. overhead projector. An overhead projector is a machine that has a light inside it and makes the writing or pictures on a sheet of plastic appear on a screen or wall. The abbreviation OHP is also used. COBUILD Advanced English Dictionary.
DEFINITION of 'Overhead'. An accounting term that refers to all ongoing business expenses not including or related to direct labor, direct materials or third-party expenses that are billed directly to customers.