1NP

1np is a term that does not have a universal definition and may refer to several different concepts depending on context. It is not a widely standardized abbreviation in most fields, and its meaning should be inferred from accompanying material such as the domain, source, or notation conventions.

In mathematics and computer science, some texts and discussions use 1NP or 1-NP to discuss ideas related to nondeterministic polynomial time. This usage is not standard; the conventional complexity class is NP. When 1NP appears, it should be interpreted according to the source's definitions.

In chemistry, 1-nitropropane is occasionally abbreviated as 1-NP in safety data sheets and industrial literature; it is an aliphatic nitro compound used as a solvent and intermediate in organic synthesis.

In linguistics and natural language processing, 1np may label the first noun phrase in a syntactic structure in certain annotation schemes, but there is no single universal standard.

Beyond these domains, 1np may also appear as a product code, file name, or username; in such cases its meaning is determined entirely by context. Because 1np lacks a fixed definition, readers should consult the specific source to determine its intended meaning.