subscript

 
Pronunciation: /ˈsʌbskrɪpt/

adjective

  • (of a letter, figure, or symbol) written or printed below the line.

noun

  • a subscript letter, figure, or symbol.
  • Computing a symbol (notionally written as a subscript but in practice usually not) used in a program, alone or with others, to specify one of the elements of an array.

Origin:

early 18th century: from Latin subscript- 'written below', from the verb subscribere (see subscribe)