Na
Wikimedia disambiguation page
NA, N.A., Na, nA or n/a may refer to:
Chemistry and physics
Sodium, symbol Na, a chemical element
Avogadro constant (NA)
Nucleophilic addition, a type of reaction in organic chemistry
Numerical aperture, a number that characterizes a range of angles in an optical system
nA, the symbol for nanoampere
Naturally aspirated engine
Biology and medicine
Na (tree) or Mesua ferrea, a species of tree native to Sri Lanka
Neuroacanthocytosis, a neurological condition
Nomina Anatomica, a former international standard for human anatomical nomenclature
Noradrenaline, a hormone
Nucleic acid analogue, compounds analogous to naturally occurring RNA and DNA
Places
Current
Namibia (ISO country code)
Naples (car number plate code: NA), Italy
North America, a continent
North Africa, a subcontinent
Historical
Netherlands Antilles (former international vehicle registration code: NA)
Na (Chinese state), a small state of the Chinese Zhou dynasty from the 11th to 8th centuries BC
Nakoku, or Na, a state in Kyūshū, Japan from the 1st to early 3rd centuries AD
Names and titles
Na (羅), a Korean surname related to the Chinese surname Luo
Na, a particle used in Thai noble names
National Academician, a member of the National Academy of Design
Art and entertainment
Na (drum), a drum played by Tibetan shamans
Nahal, Shine's pet Bengal tiger on the Nick Jr.
“Na” enters the record as wikimedia disambiguation page. Crown Archives preserves that source wording while asking what Wikimedia, disambiguation and page can confirm, complicate or overturn.
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“Na” is worth following because a concise public description often conceals a longer documentary argument. Here, Wikimedia, disambiguation and page provides the most credible route into that argument.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Aug 24, 2026. The linked authority identifier is Q224438. None of the 0 selected statements returned an explicit reference.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Na” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.