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-tomous

  1. a combining form meaning “cut, divided,” used in the formation of compound words.

    dichotomous.



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Word History and Origins

Origin of -tomous1

< Greek -tomos. See -tome, -ous
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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Sēmos′tomous, having long oral processes.

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Odon′tomous, pertaining to odontoma; Odontoph′oral, Odontoph′oran.—n.

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When To Use

What does -tomous mean?

The combining form -tomous is used like a suffix meaning “cut, divided.” It is used in some scientific and technical terms.The form -tomous ultimately comes from the Greek tómos, meaning “cut, slice, piece, roll of paper, book.” This root is also the source of the word tome. Crack open the history of tome at our entry for the word.Related to -tomous are the combining forms -ectomy, -tome, -tomy, and tomo-. Slice into their specific meanings at our Words That Use articles for the forms.Also related to tómos is atom. What’s the big idea behind atoms and cutting? Find out in our Origin section for this term.

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