paratyphoidPronunciation: /parəˈtʌɪfɔɪd/ (also paratyphoid fever)Definition of paratyphoid noun [mass noun] a fever resembling typhoid but caused by different (though related) bacteria. The bacteria are species of the genus Salmonella, in particular (in humans) S. paratyphi paratyphoid in other Oxford dictionaries Definition of paratyphoid in the US English dictionary