Prematureness is a synonym of prematurity.
As nouns the difference between prematurity and prematureness
is that prematurity is the condition of a baby being premature while prematureness is the quality of being premature.
prematurity
English
Noun
(-)
the condition of a baby being premature
prematureness
English
Noun
(-)
The quality of being premature.
Synonyms
* prematurity