axicon

noun
ax·​i·​con | \ˈak-sə-ˌkän \
plural axicons

Definition of axicon 

: an object resembling an optical lens with a conical surface that has no definite focal point On a trip to Russia, Milchberg discovered that scientists there were using an odd, funnel-shaped “axicon” lens that brought laser beams into an elongated, needle-like focus instead of the sharp point that conventional lenses produce.— Curt Suplee, Washington Post, 11 Sept. 1995

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First Known Use of axicon

1954, in the meaning defined above

History and Etymology for axicon

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Dictionary Entries near axicon

axiate

axiate gradient

axiation

axicon

Axifera

axil

axilla

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Time Traveler for axicon

The first known use of axicon was in 1954

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