n. pl. car·ci·no·mas or car·ci·no·ma·ta (-mə-tə)
An invasive malignant tumor derived from epithelial tissue that tends to metastasize to other areas of the body.
[Latin, cancerous ulcer, from Greek karkinōma, from karkinos, cancer; see kar- in the Appendix of Indo-European roots.]
car′ci·noma·toid (-nōmə-toid′) adj.
car′ci·noma·tous (-nŏmə-təs, -nōmə-) adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.