| Definition/Meaning | Word/Phrase |
|---|---|
| second brightest star in Perseus; first known eclipsing binary | Algol |
| (Greek mythology) an Ethiopian princess and daughter of Cassiopeia; she was fastened to a rock and exposed to a sea monster that was sent by Poseidon, but she was rescued by Perseus and became his wife | Andromeda |
| (Greek mythology) a woman transformed into a Gorgon by Athena; she was slain by Perseus | Medusa |
| small northern constellation near Perseus between Andromeda and Aries | Triangle , Triangulum |