An Etymological Dictionary of Astronomy and Astrophysics

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aplanatism

نابیراهی

nâbirâhi

Fr.: aplanétisme

Freedom from spherical aberration and coma.

Aplanatism, from aplanatic, from a- "negation prefix" + Gk. plane "wandering," from planasthai "to wander" + -tic adjective-forming suffix.

Nâbirahi, from nâ- "negation prefix" + birah "a devious path; a wanderer, who deviates, errs," + -i noun affix.

An Etymological Dictionary of Astronomy and Astrophysics
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