ɪnðə jˌuːkˈeɪ, sᵻklˈuːʒən ɪz dᵻfˈaɪnd baɪ ðə mˈɛntəl hˈɛlθ ˈækt nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi θɹˈiː kˈoʊd ʌv pɹˈæktɪs æz: "ðə sˈuːpɚvˌaɪzd kənfˈaɪnmənt əvə pˈeɪʃənt ɪn ɐ ɹˈuːm, wˌɪtʃ mˈeɪ biː lˈɑːkt.
In the UK, seclusion is defined by the Mental Health Act 1983 Code of Practice as: "the supervised confinement of a patient in a room, which may be locked.