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.
Medical Dictionary. arrhythmia. play. noun arÂ·rhythÂ·mia \Ä-Ërith-mÄ-É\. Medical Definition of arrhythmia. : an alteration in rhythm of the heartbeat either in time or force.