Meaning

2 senses
  1. Pertaining to proprietarians or proprietarianism (in colonial North America).

  2. (uncommon)Proprietary or proprietorial; pertaining to property or ownership (of property).

Origin

Perhaps proprietary + -al influenced by proprietorial, or perhaps a variant of the latter

Perhaps proprietary + -al influenced by proprietorial, or perhaps a variant of the latter influenced by the former.

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