duplicative, a. and n.
(ˈdjuːplɪkətɪv)
[f. L. duplicāt-, ppl. stem of duplicāre to double + -ive.]
A. adj. Having the quality of doubling; producing two instead of one.
| c 1870 Carpenter (O.), The multiplication of cells by duplicative subdivision. |
B. n. A doubling addition.
| 1884 Athenæum 23 Aug. 235/2 Clack, near Bradenstock, is the Celtic cleg, a hill..Clay Hill..is simply cleg, with a duplicative to make it intelligible. |