Definition of Atomic Number 81 in English :
Define Atomic Number 81 in English
Atomic Number 81 meaning in English
Meaning of Atomic Number 81 in English
Pronunciation of Atomic Number 81 in English
Atomic Number 81 pronunciation in English
Pronounce Atomic Number 81 in English
Atomic Number 81
see synonyms of atomic number 81Noun
1. atomic number 81, thallium, tl
a soft grey malleable metallic element that resembles tin but discolors on exposure to air; it is highly toxic and is used in rodent and insect poisons; occurs in zinc blende and some iron ores
WordNet Lexical Database for English. Princeton University. 2010.