1. (n.) A prefix from the Latin, whence F. des, or sometimes de-, dis-. The Latin dis-appears as di-before b, d, g, l, m, n, r, v, becomes dif-before f, and either dis-or di- before j. It is from the same root as bis twice, and duo, E. two. See dissever.

2. (n.) A prefix from Gr. di`s- twice. See Di-.