Without name; a term formerly applied to the large vessels in the thorax (now called the brachiocephalic trunk and vein) and the hip bone. SYN: anonyma. [L. innominatus, fr. in- neg. + nomen (nomin-), name]
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in·nom·i·nate (ĭ-nomґĭ-nāt) [L. innominatus nameless; in not + nomen name] not having a name; nameless. The term has been applied to certain structures better identified by their descriptive names, as the innominate (brachiocephalic) artery and the innominate (hip) bone.Medical dictionary. 2011.