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thallo-

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a combining form meaning “young, green shoot,” used in the formation of compound words: thallium.
a combining form representing thallus in compound words: thallophyte.
a combining form representing thallium in compound words: thallic.
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Also especially before a vowel, thall- .

Origin of thallo-

From Greek, combining form of thállos “green shoot, young branch”
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
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