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diacaustic

adjective
dia·​caus·​tic | \ ¦dīə¦kȯstik\

Definition of diacaustic

 (Entry 1 of 2)

: relating to a caustic curve or caustic surface formed by refraction — compare catacaustic

diacaustic

noun
\ "\
plural -s

Definition of diacaustic (Entry 2 of 2)

: a diacaustic curve or surface

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History and Etymology for diacaustic

Adjective

probably from French diacaustique, from dia- + caustique caustic, from Latin causticus

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