Celerity

Celerity, or celeritas (Latin), may refer to:


 * Speed, quickness

Science and technology

 * Speed of light, celeritas
 * Celerity BBS, a computer bulletin board system popular in the 1990s
 * Celerity Computing Inc., defunct San Diego, California vendor
 * Celerity IT, a Virginia-based web development consulting group
 * Phase velocity, speed of propagation of a wave
 * Proper velocity, an alternative way of measuring motion in relativity

Transport

 * USS Celeritas (SP-665), a United States Navy patrol vessel
 * Mirage Celerity, an American two-seat cabin monoplane
 * Celerity (carriage)

Sport

 * FC Celeritas Straßburg
 * Feyenoord, a Dutch football club in Rotterdam, known as Celeritas 1909–1912
 * Celeritas, a Dutch football club in Kampen, active in 1893; see
 * Celeritas, a Dutch football club in Rotterdam, active in 1901; see