We found 3 dictionaries that define the word tree agate:

General (2 matching dictionaries)

1. tree agate: Merriam-Webster
2. tree-agate: Wordnik

Science (1 matching dictionary)

3. Agate Lexicon (No longer online)

▸ Words similar to tree agate ▸ Usage examples for tree agate ▸ Idioms related to tree agate ▸ Wikipedia articles (New!) ▸ Words that often appear near tree agate ▸ Rhymes of tree agate ▸ Invented words related to tree agate