| Word | Definitions | Synonyms |
|---|---|---|
| psoas | (noun) either of two muscles of the abdomen and pelvis that flex the trunk and rotate the thigh | - |
| psocid | (noun) small winged insect living on the bark and leaves of trees and feeding on e.g. fungi and decaying plant matter | - |
| psoriasis | (noun) a chronic skin disease characterized by dry red patches covered with scales; occurs especially on the scalp and ears and genitalia and the skin over bony prominences | - |