t 1 h 4 a 1 l 1 l 1 i 1 u 1 m 3
8 letters · 13 points in Scrabble
Meaning
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
originCoined based on Ancient Greek θαλλός (thallós, “green branch”) (after the color of the radiation spectra), + -ium.
Etymology from Wiktionary, CC BY-SA 3.0