Arboraceous is a term that describes something that is tree-like, or that has the characteristics of trees. Some synonyms for this word include arboreal, woody, lignified, treelike, and dendroid. These words are all used to describe things that are related to or resemble trees in some way, such as their appearance, composition or habitat. Arboraceous plants, for example, are those that are characterized by their woody stems and branches, and typically grow in wooded or forested areas. Whether it's the lush vegetation of the Amazon rainforest or the towering oaks of the Appalachian Mountains, the arboraceous world around us is full of wonder and diversity.