- The state of being the firstborn of the children of the same parents.
- An exclusive right of inheritance belonging to the eldest son.
Anglo-Saxon kings did not succeed on the basis of primogeniture. All the kings offspring were known as aethelings -- throneworthy -- and from this gene pool the royal family would select the aetheling who seemed best qualified for the job. -- Danny Danziger, The Year 1000
- (inheritance by the first-born child): postremogeniture
- plural of