Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

sacroiliac

adjective
sa·cro·il·i·ac | \ ˌsa-krō-ˈi-lē-ˌak , ˌsā- \

Definition of sacroiliac 

(Entry 1 of 2)

: of, relating to, or being the region of the joint between the sacrum and ilium sacroiliac pain

sacroiliac

noun

Definition of sacroiliac (Entry 2 of 2)

: the sacroiliac region also : its firm fibrous cartilage

First Known Use of sacroiliac

Adjective

1831, in the meaning defined above

Noun

1936, in the meaning defined above

History and Etymology for sacroiliac

Adjective

probably from French sacro-iliaque, from New Latin sacrum + French iliaque iliac

Keep scrolling for more

Learn More about sacroiliac

Share sacroiliac

Resources for sacroiliac

Cite Time Traveler Time Traveler! Explore the year a word first appeared

Dictionary Entries near sacroiliac

sacro-

sacrococcygeus

sacrococcyx

sacroiliac

sacrolumbalis

sacrosanct

sacrosciatic foramen

Statistics for sacroiliac

Look-up Popularity

Time Traveler for sacroiliac

The first known use of sacroiliac was in 1831

See more words from the same year

Keep scrolling for more

More Definitions for sacroiliac

sacroiliac

adjective
sa·cro·il·i·ac | \ ˌsak-rō-ˈil-ē-ˌak , ˌsā-krō- \

Medical Definition of sacroiliac 

(Entry 1 of 2)

: of, relating to, affecting, or being the region of the joint between the sacrum and the ilium sacroiliac distress

sacroiliac

noun

Medical Definition of sacroiliac (Entry 2 of 2)

: sacroiliac joint

More from Merriam-Webster on sacroiliac

See words that rhyme with sacroiliac

Britannica.com: Encyclopedia article about sacroiliac

Comments on sacroiliac

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

Show Comments  Hide Comments 

WORD OF THE DAY

biannual

occurring twice a year or every two years

Get Word of the Day daily email!

Test Your Vocabulary

Name that Food Quiz

  • alt-573b465788319
  • Name these cookies!
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ

TRENDING NOW

  1. Spartan Red Cross Warns of Shelter Conditions

  2. hirsute RIP Burt Reynolds

  3. op-ed NYT Publishes Anonymous Piece

  4. collegiality Kavanaugh Mentions Word in Hearing

  5. mistrial Manafort Guilty on 8 Counts

SEE ALL

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