Medical Definition of depression
1: a displacement downward or inward <depression of the jaw>
2: an act of depressing or a state of being depressed: asa: a state of feeling sad: a mood disorder marked especially by sadness, inactivity, difficulty with thinking and concentration, a significant increase or decrease in appetite and time spent sleeping, feelings of dejection and hopelessness, and sometimes suicidal thoughts or an attempt to commit suicideb: a reduction in functional activity, amount, quality, or force <depression of autonomic function> <depression of red blood cells>
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Dictionary: Definition of "depression" Thesaurus: All synonyms and antonyms for "depression" Spanish Central: Translation of "depression" Nglish: Translation of "depression" for Spanish speakers Britannica English: Translation of "depression" for Arabic speakers Britannica.com: Encyclopedia article about "depression"
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