Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

acrocranial

adjective
ac·​ro·​cra·​ni·​al | \¦a-krō-¦krā-nē-əl\
variants: or acrocranic \ ¦a-​krō-​¦krā-​nik \

Definition of acrocranial 

of a skull

: being pyramidal or pointed at the top with a breadth-height index of 98 or above

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!

Other Words from acrocranial

acrocrany \ ˈa-​krō-​ˌkrā-​nē \ noun plural -es

First Known Use of acrocranial

1920, in the meaning defined above

History and Etymology for acrocranial

acr- + cranial, cranic

Keep scrolling for more

Learn More about acrocranial

Share acrocranial

Statistics for acrocranial

Look-up Popularity

Time Traveler for acrocranial

The first known use of acrocranial was in 1920

See more words from the same year

Comments on acrocranial

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

Show Comments  Hide Comments 

WORD OF THE DAY

chapel

a private place of worship

Get Word of the Day daily email!

Test Your Vocabulary

Difficult Vocab Quiz

  • the-education-of-achilles-eugne-delacroix
  • Which is a synonym of discomfit?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

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