1-D

noun

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.

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Meanings

adjective1-D (not comparable)
  1. abbreviationinitialismnot comparableInitialism of one-dimensional.
noun1-D (uncountable)
  1. uncountableA 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.
Cite this entry
APA

1-D. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/1-D

MLA

“1-D.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/1-D. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “1-D,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/1-D.

Source: 1-D on Wiktionary, CC BY-SA 4.0.