Meaning and usage of the word rhomboid in English

The word "rhomboid" comes from the ancient Greek language. "Rhombos" is the Greek word for a rhombus, which is a quadrilateral with equal adjacent sides and angles that are not right angles. When anatomists began naming muscles in the human body, they used this Greek word "rhombos" to describe a shape that looked like a rhombus in a certain anatomical location. The specific muscle in question, called the rhomboid major and rhomboid minor, is located between the spine and the shoulder blade, helping to rotate, elevate, and retract the shoulder blade during movement. So the word "rhomboid" comes from the root "rhombos" and refers to these specific muscles that resemble the shape of a rhombus.