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siderograph

noun
sid·er·o·graph | \ˈsidərəˌgraf, -rȧf\

Definition of siderograph 

: a combination clock and navigation device that keeps the sidereal time of the Greenwich meridian of longitude

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History and Etymology for siderograph

sidero- entry 2 + -graph

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Dictionary Entries near siderograph

Sideritis

side road

side rod

siderograph

siderographer

siderographic

siderography

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