pla·ni·sphere | \ˈplā-nə-ˌsfir \

Definition of planisphere 

: 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 for any given time

Other Words from planisphere

planispheric \ˌplā-nə-ˈsfir-ik, -ˈsfer- \ adjective

First Known Use of planisphere

14th century, in the meaning defined above

History and Etymology for planisphere

alteration of Middle English planisperie, from Medieval Latin planisphaerium, from Latin planum plane + sphaera sphere

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The first known use of planisphere was in the 14th century

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one that holds something together

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