astronomical horizon
noun
The horizon that would be seen if the earth's surface were perfectly smooth; the intersection of a horizontal plane through an observer with the celestial sphere.
Origin
Mid 18th century; earliest use found in Temple Henry Croker (1729–?1790), writer.
- well-dispersed
- well disposed
- well-disputed
- well-dissected
- well-dissembled
- well-distinguished
- well-divided
- well-documented
- well-doer
- well-doing
- well done
- well-dowered
- well drag
- well drain
- well-drained
- well-drawn
- well dressed
- well-dresser
- well dressing
- well-dried
- well drill
- well-drilled
- well driller
- well drilling
- well-driven