(biology, of an organism) The stage when an organism can reproduce, though this is dissimilar from adulthood.

(biology, of an organism) Having reached the age or stage of being able to reproduce.

(education) An adult learner.

plural of mature student

(cytology) A proposed transport mechanism of protein through the Golgi apparatus in which the cisternae move, beginning at the cis face and progressing via the medial face to the trans face.

plural of mature-age student

(education) An adult learner.