thallo-

especially before a vowel, thall-

1. a combining form meaning “young, green shoot,” used in the formation of compound words: thallium.

2. a combining form representing thallus in compound words: thallophyte.

3. a combining form representing thallium in compound words: thallic.

Word History and Origins

Origin of thallo-¹

From Greek, combining form of thállos “green shoot, young branch”

Example Sentences

In some parts of Greece there were but two Hor�, Thallo, goddess of the bloom, and Carpo, of the corn and fruit-bearing season.

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