A modal auxiliary verb, often simply called a modal verb or even just a modal, is used to change the meaning of other verbs (commonly known as main verbs) by expressing modalityâthat is, asserting (or denying) possibility, likelihood, ability, permission, obligation, or future intention.
Euthymia (medicine) Euthymia is a normal non-depressed, reasonably positive mood. It is distinguished from hyperthymia, which refers to an extremely happy mood, and dysthymia, which refers to a depressed mood. It is a term used frequently in mental status exams.
sysÂ·tem (sÄ­sâ²tÉm) n. 1. A group of interacting, interrelated, or interdependent elements forming a complex whole, especially: a. An organism as a whole, especially with regard to its vital processes or functions: The animal's entire system seems to be affected by the disease.