EKABORON

Ek"a*bor`, Ek"a*bo"ron, n. Etym: [G., fr. Skr. one + G. bor, boron, E. boron.] (Chem.)

Definition: The name given by Mendelejeff in accordance with the periodic law, and by prediction, to a hypothetical element then unknown, but since discovered and named scandium; -- so called because it was a missing analogue of the boron group. See Scandium.

Source: Webster’s Unabridged Dictionary 1913 Edition