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1d. In DICTIOUS you will not only get to know all the dictionary meanings for the word
1d, but we will also tell you about its etymology, its characteristics and you will know how to say
1d in singular and plural. Everything you need to know about the word
1d you have here. The definition of the word
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English
Etymology 1
From 1 + d (“old penny”).
Noun
1d (plural 1ds)
- (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').
Etymology 2
Adjective
1d (comparative more 1d, superlative most 1d)
- Initialism of one-dimensional.