Definition of "allodial"

Henry reconciled the Zähringer, whom he had deposed from Carinthia in 1078, by raising their allodial property in the Black Forest to a new duchy 20 years later.

2016, Peter H. Wilson, The Holy Roman Empire, Penguin, published 2017, page 351

Charles Theodore, elector Palatine, was generally considered as rightful heir to all the Bavarian territories which were not female fiefs or allodials.

1807, William Coxe, History of the House of Austria