Arcturus

(ärk to̵or′əs, -tyo̵or′-)

noun

a giant, orange star in the constellation Boötes, the brightest star in the N celestial sphere: magnitude, -0.04

Origin: L < Gr Arktouros < arktos, a bear + ouros, a guard < IE *woros, heedful < base *wer-: see warn

See Arcturus in American Heritage Dictionary 4

noun

The fourth brightest star in the sky and the brightest star in the constellation Boötes, approximately 36 light-years from Earth.

Origin:

Origin: Middle English

Origin: , from Latin Arctūrus

Origin: , from Greek Arktouros

Origin: : arktos, bear; see ṛtko- in Indo-European roots

Origin: + ouros, guard (from its position behind Ursa Major); see wer-³ in Indo-European roots

Learn more about Arcturus

Arcturus science

Arcturus in a sentence

link/cite print suggestion box

More from YD