Definition of multinomial in US English:


noun & adjective

  • another term for polynomial
    • ‘In 1935 he investigated multinomial distributions.’
    • ‘The likelihood was calculated under the two models according to the multinomial formula.’
    • ‘The multinomial coefficient depends only on the sample size and does not influence the parameter estimation and the maximum likelihood tests.’
    • ‘These coefficients are correlated, because they depend on the multinomial count vector X and because the same alleles can overlap between different coefficients.’


Early 17th century: from multi- ‘many’, on the pattern of binomial.