aplanatic

[ ap-luh-nat-ik ]

adjectiveOptics.
  1. free from spherical aberration and coma.

Origin of aplanatic

1
1785–95; a-6 + Greek planá(ein) to wander + -tic. See planet

Other words from aplanatic

  • ap·la·nat·i·cal·ly, adverb

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British Dictionary definitions for aplanatic

aplanatic

/ (ˌæpləˈnætɪk) /


adjective
  1. (of a lens or mirror) free from spherical aberration

Origin of aplanatic

1
C18: from Greek aplanētos prevented from wandering, from a- 1 + planētos, from planaein to wander

Derived forms of aplanatic

  • aplanatically, adverb

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