Defn: A small constellation north of Aquila; the Arrow.
2. (Arch.)
Defn: The keystone of an arch. [R.] gwitt.
3. (Geom.)
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.]
4. (Anat.)
Defn: The larger of the two otoliths, or ear bones, found in most fishes.
5. (Zoöl.)
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.
SAGITTAL
Sag"it*tal, a. Etym: [L. sagitta an arrow: cf. F. saguttal.]