Ek′a·sil′i·con (ĕk′ȧ·sĭl′ĭ·kŏn), n. [Skr. ēka one + E. silicon.] (Chem.) The name of a hypothetical element predicted and afterwards discovered and named germanium; — so called because it was a missing analogue of the silicon group. See Germanium, and cf. Ekabor.