terrarium [terrariums](enclosure for displaying very small animals) noun [UK: terˈeəriəm] [US: terˈeriəm]If you're scared of snakes, don't come in my room because I have five of them roaming around. I only put them in the terrarium when it's time to eat. = Si temes a las serpientes, no entres en mi habitación porque tengo cinco allí y están sueltas. Solo las meto en el terrario para darlas de comer.