See also: 1D, 1-D, and 1/d

English edit

Alternative forms edit

Noun edit

1d (plural 1ds)

  1. (British, Ireland, historical) Abbreviation of one penny. (a coin with the value of 1 pence/penny; 1/240th of a pound, in pre-decimalisation currency, never used for 'one new penny').

Adjective edit

1d (comparative more 1d, superlative most 1d)

  1. Initialism of one-dimensional.