The Collaborative International Dictionary of English v.0.48:
Multinominal \Mul`ti*nom"i*nal\, Multinominous \Mul`ti*nom"i*nous\, a. [L. multinominis; multus many + nomen nominis name.] Having many names or terms. [1913 Webster]The Collaborative International Dictionary of English v.0.48:
multinominal \mul`ti*nom"i*nal\ n. (Math.) Polynomial. [R.] [PJC]