Standard Lemma guide

sacroiliac

adj · noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • /ˌsækɹoʊˈɪliˌæk/

1

adj

Meaning 1

Relating to the sacrum and ilium, or to the region of the lower back where they are located.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: anatomy, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The region of the sacrum and the ilium in the lower back.

Definition source: English Wiktionary via Wiktextract

Topics: anatomy, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Etymology tree English sacro- Proto-Indo-European *welH-der. Ancient Greek εἴλω (eílō) Ancient Greek εἰλέω (eiléō) Ancient Greek εἰλεός (eileós)der.? Latin īle Latin -acus Latin īliacuslbor. French iliaquebor. English iliac English sacroiliac From sacro- + iliac.

Across languages

Translations

3 source translations are retained for this English entry.

  • Czech: sakroiliakální — relating to the sacrum and ilium
  • Greek: οσφυολαγόνιος (osfyolagónios) — relating to the sacrum and ilium
  • Spanish: sacroilíaco — relating to the sacrum and ilium