(law) In most systems of patent law, all information that has been made available to the public in any form before a given date that might be relevant to a patent's claims of originality, and to which the patent application is compared to determine if it in fact describes a new invention.

Music composed with advanced structural and theoretical considerations, as opposed to folk music and pop music.

A form of illustration whose main goal is to convey a visual representation of a concept.

plural of art form

(art) The use of letters and other text characters to form a picture.

Craft traditions and values of various social groups. / Intangible art forms such as folk music and folk dance rooted in and reflective of the cultural life of a community. / Outsider art.

plural of art movement

Art that is usually exhibited and delivered in a conventional context but that makes fun of serious art or the artistic establishment or challenges the nature of art.

plural of art school

plural of art historian