a. 1. Having the quality of duplicating or doubling. [ 1913 Webster ]

2. (Biol.) Having the quality of subdividing into two by natural growth. “Duplicative subdivision.” Carpenter. [ 1913 Webster ]

a. (Bot.) (a) Having induplicate sepals or petals in æstivation. (b) Having induplicate leaves in vernation. [ 1913 Webster ]

a. [ Cf. F. réduplicatif. ] Double; formed by reduplication; reduplicate. I. Watts. [ 1913 Webster ]