DICTIONARY ENTRY
3 SYLLABLES
thallium
/'θæliəm/ · θæliəm
Thallium has 3 syllables: thal · li · um.
thal
01
li
02
um
03
noun. 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.
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