EnglishEdit

AdjectiveEdit

1-D (not comparable)

  1. Initialism of one dimensional.

NounEdit

1-D (uncountable)

  1. A selective service class denoting that the registrant is already a reserve member of the armed forces or a student taking military training, as in ROTC or an accepted aviation cadet applicant.
Last modified on 16 February 2014, at 10:32