Conventional Estates
Defined in 3 dictionaries — Cyclopedic (1922), Ballentine's (1916), Black's (1891)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
Those estates for life which are expressly created by the act of the parties, as distinguished from legal estates, or those which are created by operation of law. 2 Bl. Comm. 120.
Ballentine's Law Dictionary
James A. Ballentine · 1916
Estates other than for life or of inheritance created by acts of the parties.
A Dictionary of Law
Henry Campbell Black · 1891
Those freeholds not of inheritance or estates for life, which are created by the express acts of the parties, in contradistinction to thase which are legal and arise from the operation of law.