n.
a home operated by a volunteer collective or social services organization, usually to accommodate and support abused women and their children.
Type: 5. Frequency — Interval house is most frequent in Canada based on internet domain searches (see Chart 1). The term may have originated in Canada as well, since the earliest US newspaper attestation dates from 1978. The 1977 quotation below indicates the term may originate with the proper name of the Toronto Interval House, which opened on 1 April 1973 (see CKC reference).
See also COD-2, s.v. "interval house", which is marked "Cdn".
See also: transition house
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Chart 1: Internet Domain Search, 21 Aug. 2013