terrarium[tə rer′ē əm]
terrarium definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
terrarium definition by American Heritage Dictionary
noun pl. ter·rar·i·ums or ter·rar·i·a
A small enclosure or closed container in which selected living plants and sometimes small land animals, such as turtles and lizards, are kept and observed.
Origin: New Latin terrārium : Latin terra, earth; see terrene + -arium.