səˈjid.ə noun
Etymology: New Latin, from Latin, arrow, probably of non-Indo-European origin
1. -s : the distance from the midpoint of an arc to the midpoint of its chord
2. -s : the larger of the two large otoliths found in the ear of most fishes
3.
a. capitalized : the chief genus of Chaetognatha including the largest and several common arrowworms
b. plural sagittas -d.əz or sagit·tae -d.ˌē : any arrowworm of the genus Sagitta