| 释义 |
plan·i·sphere
\ˈplanə̇ˌsfi(ə)r\ noun
Etymology: Medieval Latin planisphaerium, from Latin planus flat, plane + sphaera sphere — more at floor, sphere
: a representation of the circles of the sphere on a plane; especially : a polar projection of the celestial sphere and the stars on a plane with adjustable circles or other appendages for showing celestial phenomena (as the position of the heavens or the time of rising and setting of stars) for any given time
• plan·i·spher·ic \| ̷ ̷ ̷ ̷|sfirik, -fer-\ adjective |