n.d.

abbr. no date.

* * *

no date.

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-nd,

a suffix added to the numeral 2 or any numeral ending with 2 (except 12) to indicate the ordinal number: »

42nd Street, November 22nd.

Nd (no period),

neodymium (chemical element).

ND (no periods).

1. national debt.

2. North Dakota (with postal Zip Code).

n.d.,

no date; not dated.

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abbr. no date (used esp. in bibliographies)