Deciduous has a similar meaning when referring to animal parts, such as deciduous antlers in deer, [5] deciduous teeth (baby teeth) in some mammals (including humans); Unlike evergreen trees that retain their leaves throughout the year, deciduous trees shed their leaves annually, usually in response to seasonal changes. This occurs in the fall in temperate deciduous forests, and in the dry season in tropical and subtropical deciduous forests. · remember what deciduous means by learning the latin root. The meaning of deciduous is falling off or shed seasonally or at a certain stage of development in the life cycle. · deciduous trees lose their leaves at the end of their growing season. Get the definition here, plus a list of examples of such trees, shrubs, and vines. They lose their green and colorful leaves to coincide with the cold winter seasons. In plants, it is the result of natural processes. · deciduous trees are defined by their leaves. Deciduous trees, commonly referred to as broadleaf trees, are a group of trees that undergo a significant change in their foliage each year. Or decidua, the uterine lining that sheds off after birth. How to use deciduous in a sentence.