carcinoembryonic antigen car·ci·no·em·bry·on·ic antigen (kär'sə-nō-ěm'brē-ŏn'ĭk)
n.
Abbr. CEA
A glycoprotein present in fetal gastrointestinal tissue, generally absent from adult cells with the exception of some carcinomas.
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
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