sagitta

Definitions

1. 1.(Arch.) The keystone of an arch. [R.] gwitt.
2. 2.(Geom.) 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.]
3. 3.(Anat.) The larger of the two otoliths, or ear bones, found in most fishes.
4. 4.(Zoöl.) 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 edition (public domain, via GCIDE / Project Gutenberg).

Related questions

• What does "sagitta" mean?

Reverse-dictionary questions

Definition-first questions whose answer is sagitta.

• What is the keystone of an arch. [R.] gwitt called?
• What is 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.] called?
• What is the larger of the two otoliths, or ear bones, found in most fishes called?
• What is 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 called?