Definitions

1. noun

A nymph, especially in ancient Greek and Roman mythology, associated with the constellations.

“The astronomer was fascinated by the mythological story of the astraeid, who represented the constellation Andromeda.”

2. noun

A minor planet or asteroid, especially one discovered in the 19th century.

“The astraeid was a small, irregularly shaped asteroid discovered by a young astronomer in the 1990s.”