ALGOL, or Persei, a variable fixed star of the second or third magnitude, called Medusa's Head. Its position, according to the catalogue of the London Astronomical Society, was, on January 1. 1853, 2 h. 58 m. 37.16 sec.; N. Decl. 49° 36' 51.76".
ALGOR is used to signify an unusual coldness in any part of the body.