Link Centre Dictionary

atomic number 2

ato·mic·num·ber

uncommon

noun

1.

a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)

Related words

WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.