ilia
Definition
- Noun (plural of ):
- Anatomy: The "ilia" are the plural form of "ilium," referring to the two large, broad bones that form the upper part of the hip bone (the pelvis) in vertebrates, including humans. Each ilium is a flat, wing-shaped bone that contributes to the structure of the pelvic girdle.
Usage Examples
- Noun:
- The ilia are essential for supporting the weight of the upper body when standing or walking. (The two ilium bones provide structural support in the pelvis.)
- In a fracture of the pelvis, the ilia are often affected due to their size and location. (The ilium bones can be broken in pelvic injuries.)
Advanced Usage
"The ilia articulate with the sacrum": In anatomy, the ilia connect to the sacrum (the triangular bone at the base of the spine) at the sacroiliac joints.
- The ilia form the sacroiliac joints with the sacrum, allowing for slight movement during walking. (The ilium bones join the sacrum at these joints.)
"The ilia serve as attachment points for muscles": The ilia provide surfaces for the attachment of various muscles of the abdomen, back, and thighs.
- The gluteal muscles attach to the outer surface of the ilia. (Muscles like the gluteus maximus connect to the ilium bones.)
Variants and Related Words
Ilium (noun, singular): The singular form of "ilia," referring to one of the two hip bones.
- The ilium is the largest bone of the pelvis. (One of the ilia.)
Iliac (adjective): Relating to the ilium.
- The iliac crest is the curved upper edge of the ilium. (The top border of the ilium bone.)
Synonyms
- Hip bone (n): A general term for the ilium, ischium, and pubis together, but often used informally to refer to the ilium.
- Pelvic bone (n): Another general term for the bones of the pelvis, including the ilia.
Related Idioms (Note: "Ilia" is a technical anatomical term and has no common idioms or phrasal verbs.)
- No idioms: Because "ilia" is a specific medical term, it does not appear in everyday idiomatic expressions.