rare1. [f. L. vīta: see VITAL a.] = VIABILITY1.

1

  The adj. vitable, in place of viabie, was suggested by F. Hall, Mod. Eng. (1873), 181, note.

2

1889.  Nature, 26 Sept. If the modification is of service, then presumably it will add to the vitability of the individual.

3