plural of neon (the fish, neon tetras)

(of a color) That resembles a neon light; extremely bright; fluorescent

(uncountable) The chemical element (symbol Ne) with an atomic number of 10. The second of the noble gases, it is a colourless, odorless inert gas. / (countable) A form or sample of the element.

Illuminated with neon lights.

(physics) The major stable isotope of neon, ²⁰₁₀Ne, having ten protons and ten neutrons; it amounts to over 90% of the element in nature

(physics) A rare stable isotope of neon, ²¹₁₀Ne, having ten protons and eleven neutrons; it amounts to less than 0.3% of the element in nature

(physics) A minor stable isotope of neon, ²²₁₀Ne, having ten protons and twelve neutrons; it amounts to about 9% of the element in nature

plural of neon tetra

Paracheirodon innesi (syn. Hyphessobrycon innesi), a small, tropical American fish, popular as an aquarium fish.

lighting by neon lamps