Word.ws English Dictionary

1-D

1-D is the initialism of one-dimensional.

Meaning of one-dimensional

Adjective

one-dimensional (not generally comparable, comparative more one-dimensional, superlative most one-dimensional)

  1. (not comparable, usually) Having length, but no width, height or depth.
    • A straight line is one-dimensional.
  2. (figuratively, not comparable, usually) Lacking depth or believability; flat.
    • one-dimensional characters
  3. (figuratively, not comparable, usually) Lacking personal depth and substance; conceited, vain, shallow, superficial.

Noun

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.

Phrases with 1-D

Questions about 1-D

What does 1-D mean?
1-D means 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.
What is 1-D the initialism of?
1-D is the initialism of one-dimensional.
What part of speech is 1-D?
1-D is a noun.

Words near 1-D in the dictionary

  1. 1-A-O
  2. 1-As
  3. 1-bromo-3-chloropropane
  4. 1-C
  5. 1-connected
  6. 1-D
  7. 1-D RCM
  8. 1-D RCMs
  9. 1-dimensional
  10. 1-G
  11. 1-H

Source and license

Adapted from Wiktionary: 1-D (page history and authors); one-dimensional (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “1-D.” Word.ws, https://word.ws/1-d. Based on Wiktionary, CC BY-SA 4.0.