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: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9

[2x]

: Næ Né N- N. Na Nb Nc Nd Ne Ng Nh Ni Nj Nl Nm Nn No Np Nr Ns Nt Nu Nv Nw Ny

Table of Contents POS
HYPHEN
WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY

neptunium

POS

Noun

HYPHEN

nep=tu=ni=um

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WORDNET DICTIONARY

Noun neptunium has 1 sense

neptunium(n = noun.substance) atomic number 93, np - a radioactive transuranic metallic element; found in trace amounts in uranium ores; a by-product of the production of plutonium; Array

is a kind of metal, metallic element

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CIDE DICTIONARY

neptunium, n. [NL.].

A radioactive metallic element of atomic number 93, produced in nuclear reactors from Plutonium or Uranium. Symbol Np; The atomic weight of the most stable isotope is 237.0482. [PJC]

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OXFORD DICTIONARY

neptunium, n. Chem. a radioactive transuranic metallic element produced when uranium atoms absorb bombarding neutrons.

Usage

Symb.: Np.

Etymology

NEPTUNE, as the next planet beyond Uranus, + -IUM

For further exploring for "neptunium" in Webster Dictionary Online