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Origin and history of Arcturus

Arcturus

late 14c., orange bright star in the constellation Bootes (also used of the whole constellation), from Latin Arcturus, from Greek Arktouros, literally "guardian of the bear" (the bright star was anciently associated with nearby Ursa Major, the "Big Dipper," which it seems to follow across the sky). For first element see arctic; second element is Greek ouros "watcher, guardian, ward" (from PIE root *wer- (3) "perceive, watch out for"). It is fourth-brightest of the fixed stars. The double nature of the great bear/oxen wagon (see Charles's Wain) has given two different names to the constellation that follows it: Arktouros "bear-ward" and Bootes, "cow-herd."

Arcturus in the Bible (Job ix.9 and xxxviii.32) is a mistranslation by Jerome (continued in KJV) of Hebrew 'Ayish, which refers to what we see as the "bowl" of the Big Dipper. In Israel and Arabia, the seven stars of the Great Bear seem to have been a bier (the "bowl") followed by three mourners. In the Septuagint it was translated as Pleiada, which is equally incorrect.

Entries linking to Arcturus

late 14c., artik, "of or pertaining to the north pole of the heavens," from Old French artique and directly from Medieval Latin articus, from Latin arcticus, from Greek arktikos "of the north," literally "of the (constellation) Bear," from arktos "bear;" also "Ursa Major; the region of the north," the Bear being the best-known northern circumpolar constellation.

This is from *rkto-, the usual Indo-European root for "bear" (source also of Avestan aresho, Armenian arj, Albanian ari, Latin ursus, Welsh arth). For speculation on why Germanic lost the word, see bear (n.). The -c- was restored from 1550s.

In Middle English typically of the heavens; in reference to the earth it is attested from early 15c. as "northern;" from 1660s as "cold, frigid." As a noun, with capital A-, "the northern polar regions," from 1560s.

northern constellation containing the bright star Arcturus, late 14c., Boetes, from Latin Boötes, from Greek Boötēs, literally "cow-herd," also an adjective, "of a cow," from bous "cow, bull, ox" (from PIE root *gwou- "ox, bull, cow"). Also see Arcturus.

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