typhoidPronunciation: /ˈtʌɪfɔɪd/Translate typhoid | into French | into German | into Italian Definition of typhoid noun (also typhoid fever) [mass noun] an infectious bacterial fever with an eruption of red spots on the chest and abdomen and severe intestinal irritation. Typhoid is caused by the bacterium Salmonella typhi: Gram-negative rods Derivatives typhoidal adjective Origin: early 19th century: from typhus + -oidtyphoid in other Oxford dictionaries Definition of typhoid in the US English dictionary