
A chair is a type of
seat, typically designed for one person and consisting of one or more legs, a flat or slightly angled seat and a back-rest. It may be made of
wood,
metal
A metal () is a material that, when polished or fractured, shows a lustrous appearance, and conducts electrical resistivity and conductivity, electricity and thermal conductivity, heat relatively well. These properties are all associated wit ...
, or synthetic materials, and may be padded or
upholstered in various colors and fabrics.
Chairs vary in design. An armchair has
armrests fixed to the seat; a
recliner is upholstered and features a mechanism that lowers the chair's back and raises into place a
footrest; a
rocking chair has legs fixed to two long curved slats; and a
wheelchair
A wheelchair is a mobilized form of chair using two or more wheels, a footrest, and an armrest usually cushioned. It is used when walking is difficult or impossible to do due to illnesses, injury, disabilities, or age-related health conditio ...
has wheels fixed to an axis under the seat.
Etymology
''Chair'' comes from the early 13th-century English word ''chaere'', from Old French ("chair, seat, throne"), from Latin ("seat").
History

The chair has been used since antiquity, although for many centuries it was a symbolic article of state and dignity rather than an article for ordinary use. "The chair" is still used as the emblem of authority in the
House of Commons
The House of Commons is the name for the elected lower house of the Bicameralism, bicameral parliaments of the United Kingdom and Canada. In both of these countries, the Commons holds much more legislative power than the nominally upper house of ...
in the
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
and
Canada
Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...
, and in many other settings. In keeping with this historical connotation of the "chair" as the symbol of authority, committees, boards of directors, and academic departments all have a 'chairman' or 'chair'. Endowed professorships are referred to as chairs.
It was not until the 16th century that chairs became common. Until then, people sat on
chests,
benches, and stools, which were the ordinary seats of everyday life. The number of chairs which have survived from an earlier date is exceedingly limited; most examples are of