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psoas
This term is a specialized anatomical designation used primarily in medical, physiotherapy, and fitness contexts. It refers to a deep-seated muscle that is critical for posture and locomotion, often discussed in the context of lower back pain or hip mobility.
Because it is a specific anatomical structure, it is typically treated as a countable noun when referring to the muscle on either side of the body (the left or right psoas). However, in clinical shorthand, it is frequently used as an uncountable mass noun to describe the general muscle group or the region of the body.
Meanings
Examples
The psoas muscle is essential for lifting the knee toward the chest.
You have a tight psoas which is likely causing your lower back pain.
I need to stretch my psoas after sitting at my desk all day.
The surgeon carefully avoided the psoas during the procedure.
Does the psoas connect directly to the lumbar vertebrae?
My physical therapist mentioned that a weak psoas can affect balance.
I can feel a deep ache in my psoas after that long run.
The psoas major is the larger of the two muscles in this group.