Sagitta : Definition
Pronunciation : Sa*git"ta
Part of Speech : n.
Etymology : [L., an arrow.]
Definition : 1. (Astron.)
Defn: A small constellation north of Aquila; the Arrow.
Defn: The keystone of an arch. [R.] gwitt.
Defn: 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. [Obs.]
Defn: The larger of the two otoliths, or ear bones, found in most fishes.
Defn: 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.
Source : Webster's Unabridged Dictionary, 1913