Meaning

noun a negative

noun a radioactive transuranic element synthesized by bombarding curium with carbon ions; 7 isotopes are known

adjective quantifier; used with either mass nouns or plural count nouns for indicating a complete or almost complete lack or zero quantity of

originInherited from Middle English no, noo, na, a reduced form of none, noon, nan (“none, not any”) used before consonants (compare a to an), from Old English nān (“none, not any”), from Proto-West Germanic *nain, from Proto-Germanic *nainaz (“not any”, literally “not one”), equivalent to ne (“not”) + a. Piecewise doublet of none. Cognate with Scots nae (“no, not any, none”), Old Frisian nān, nēn…

Etymology from Wiktionary, CC BY-SA 3.0