Definition of mortmain in US English:

mortmain

noun

Law
  • The status of lands or tenements held inalienably by an ecclesiastical or other corporation.

    • ‘New laws on mortmain limited the size of donations that might be bequeathed to religious foundations.’
    • ‘All Catholic governments tightened up legislation against mortmain.’
    • ‘The rest was in the hands of the Church and nobility, protected against sale by entail or mortmain, or owned by urban corporations, or bourgeois landowners.’
    • ‘Royal licences to acquire property in mortmain allowed for a period of expansion into adjacent properties in the early 14th century.’
    • ‘Hospitals and poor houses found the charitable bequests on which they had always relied dwindling, and, as ecclesiastical institutions, they were cut off from further endowments by legislation of 1749 restricting mortmain.’

Origin

Late Middle English: from Anglo-Norman French, Old French mortemain, from medieval Latin mortua manus ‘dead hand’ (probably alluding to impersonal ownership).

Pronunciation

mortmain

/ˈmôrtmān//ˈmɔrtmeɪn/