Definition of OCD in US English:

OCD

noun

Psychiatry
  • 1Obsessive-compulsive disorder.

    ‘Hughes suffers from OCD and repeatedly washes his hands’
    1. 1.1 (in general use) obsessive-compulsive personality disorder.
      ‘she thinks Virgos have a predisposition to OCD, because of their desire for perfectionism’

Pronunciation

OCD

/ˌōsēˈdē//ˌoʊsiˈdi/