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thallium

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noun thal·li·um \ ˈtha-lē-əm \

Definition of thallium

:a soft poisonous metallic element that resembles lead in physical properties, occurs sparsely in a number of common ores, and is used chiefly in the form of compounds especially in photosensitive devices and formerly as a pesticide — see Chemical Elements Table

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Origin and Etymology of thallium

New Latin, from Greek thallos green shoot; from the bright green line in its spectrum

Medical Dictionary

thallium

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noun thal·li·um \ ˈthal-ē-əm \

medical Definition of thallium

:a sparsely but widely distributed poisonous metallic element that resembles lead in physical properties and is used chiefly in the form of compounds in photoelectric cells or as a pesticide —symbol Tl — see Chemical Elements Table

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  1. See words that rhyme with thallium Britannica.com: Encyclopedia article about thallium

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