Relating to or affecting the muscles of the buttocks, especially the gluteus maximus, gluteus medius, or gluteus minimus.
From Latin glutaeus, from Greek gloutos (buttock), plus English adjectival suffix -al. Standard anatomical term used in medicine and fitness.
Gluteal is everywhere in anatomy textbooks and fitness classes, yet it comes from ancient Greek doctors who needed a professional term for 'butt'—showing that anatomical Latin-Greek terms exist partly to make body parts sound dignified enough for serious medical discussion!
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