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afocal

adjective
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afo·​cal | \ (ˈ)ā-¦fō-kəl \

Definition of afocal

physics
: having focal points infinitely distant an afocal lens

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First Known Use of afocal

1887, in the meaning defined above

History and Etymology for afocal

a- entry 2 + focal

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The first known use of afocal was in 1887

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Cite this Entry

“Afocal.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/afocal. Accessed 7 December 2019.

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