Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

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

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for diacaustic

Adjective

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

Keep scrolling for more

Learn More about diacaustic

Statistics for diacaustic

Look-up Popularity

Comments on diacaustic

What made you want to look up diacaustic? Please tell us where you read or heard it (including the quote, if possible).

Show Comments  Hide Comments 

WORD OF THE DAY

disparage

Listen to the pronounciation of disparage

to speak slightingly about or to degrade

Get Word of the Day daily email!

Test Your Vocabulary

Challenging Vocabulary Quiz Returns!

  • stylized drawing of woman pole vaulting across gap to get trophy
  • Which is a synonym of fuliginous?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play
Ask the Editors
Word Games