Sub"script (?), a. [L. subscriptus, p.p. See Subscribe.]

Written below or underneath; as, iota subscript. (See under Iota.) Specifically Math., said of marks, figures, or letters (suffixes), written below and usually to the right of other letters to distinguish them; as, a, n, 2, in the symbols X_a, A_n, Y₂. See Suffix, n., 2, and Subindex.

© Webster 1913.

Sub"script, n.

Anything written below.

Bentley.

© Webster 1913.