no dateIn an APA reference or citation, n. Nd definition, (especially of bonds) next day (delivery). The definition of ND is 'And,' 'No Drugs,' 'Naturopathic Doctor,' 'Negligent Discharge' and 'North Dakota. What does ND mean? Get the full information of ND acronym / abbreviation / slang definitions at AcronymsandSlang. The meaning of ND is: And.