terrariumnoun [ C ]
/təˈreə.ri.əm//təˈrer.i.əm/plural terrariums or or terrariaa container, often with a glass front, in which small reptiles or other small creatures are kept:
The terrarium is without doubt the most important aspect of successful reptile and amphibian keeping.
a glass container in which plants are grown:
glass terrariums to create your own miniature green space indoors