The tomato (US: / t ə m eɪ t oʊ /, UK: / t ə m ɑː t oʊ /), Solanum lycopersicum, is a plant whose fruit is an edible berry that is eaten as a vegetable. The tomato is a member of the nightshade family that includes tobacco, potato, and chili peppers.It originated from and was domesticated in western South America.It was introduced to the Old World by the Spanish in the Columbian ...