[ˈpɑːsɛk], (Noun)

Definitions:
- a unit of distance used in astronomy, equal to about 3.26 light years (3.086 × 10¹³ kilometres). One parsec corresponds to the distance at which the mean radius of the earth's orbit subtends an angle of one second of arc


Phrases:

Origin:
early 20th century: blend of parallax and second