adverb
- no1.
- not; in no way; by no means.
conjunction
- nor; neither.
Symbol, Chemistry.
- sodium.
- not applicable.
- not available.
- no account.
- not applicable.
- National Army.
- North America.
- not applicable.
- Microscopy. numerical aperture.
determiner
- a variant of nae
the internet domain name for
- Namibia
the chemical symbol for
- sodium
abbreviation for
- North America
- Netherlands Antilles (international car registration)
abbreviation for
- not applicable
- The symbol for the elementsodium
abbr.
- Nomina Anatomica (official system for anatomical nomenclature)
- The symbol for sodium.
Na
- A soft, lightweight, silvery-white metallic element of the alkali group that reacts explosively with water. It is the most abundant alkali metal on Earth, occurring especially in common salt. Sodium is very malleable, and its compounds have many important uses in industry. Atomic number 11; atomic weight 22.99; melting point 97.8°C; boiling point 892°C; specific gravity 0.971; valence 1. See Periodic Table.