from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A constellation in the Northern Hemisphere near Aquila and Vulpecula.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • proper n. A small autumn constellation of the northern sky, said to resemble an arrow. It lies between the constellations of Vulpecula and Aquila.

from the GNU version of the Collaborative International Dictionary of English

  • n. A small constellation north of Aquila; the Arrow.
  • n. The keystone of an arch.
  • n. The distance from a point in a curve to the chord; also, the versed sine of an arc; -- so called from its resemblance to an arrow resting on the bow and string.
  • n. The larger of the two otoliths, or ear bones, found in most fishes.
  • n. A genus of transparent, free-swimming marine worms having lateral and caudal fins, and capable of swimming rapidly. It is the type of the class Chætognatha.

from The Century Dictionary and Cyclopedia

  • n. [capitalized] An insignificant but very ancient northern constellation, the Arrow, placed between Aquila and the bill of the Swan.
  • n. In anatomy, the sagittal suture.
  • n. In ichthyology, one of the otoliths of a fish's ear.
  • n. [capitalized] The typical genus of Sagittidæ, formerly containing all the species, now restricted to those with two pairs of lateral fins besides the caudal fin. Also Saggitta, Saggita, Sagita. See accompanying cut.
  • n. An arrow-worm or sea-arrow; a member of the Sagittidæ.
  • n. The keystone of an arch.
  • n. In geometry: The versed sine of an arc: so called by Kepler because it makes a figure like an arrow upon a bow.
  • n. The abscissa of a curve.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a small constellation in the northern hemisphere between Cygnus and Aquila and crossed by the Milky Way
  • n. any arrowworm of the genus Sagitta


Latin, sagitta, arrow.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin sagitta ("arrow"). (Wiktionary)



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