411 REFERENCE · Wiktionary
1-D
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
1D 1D 1d 1/d
English
Adjective
-
en one-dimensional.
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.
en compound adjectives
en Geometry