We found 15 dictionaries that define the word thermal spring:

General (12 matching dictionaries)

1. thermal spring: Merriam-Webster
2. thermal spring: Oxford Learner's Dictionaries
3. thermal spring: Collins English Dictionary
4. thermal spring: Vocabulary.com
5. thermal spring: Wiktionary
6. thermal spring: The Wordsmyth English Dictionary-Thesaurus
7. thermal spring: Infoplease Dictionary
8. thermal spring: Dictionary.com
9. thermal spring: Rhymezone
10. thermal spring: FreeDictionary.org
11. thermal spring: Mnemonic Dictionary
12. thermal spring: TheFreeDictionary.com

Computing (1 matching dictionary)

13. thermal spring: Encyclopedia

Science (1 matching dictionary)

14. Illustrated Glossary of Geologic Terms (No longer online)

Tech (1 matching dictionary)

15. Lake and Water Word Glossary (No longer online)

(Note: See thermal_springs as well.)

Definitions from Wiktionary (thermal spring) ▸ noun:  A hot spring. Similar: hot spring, springhead, sulphur spring, well, wall spring, spring, springwater, spa pool, spa bath, bedspring, more... Opposite: cold spring, non-thermal spring, frigid spring ▸ Words similar to thermal spring ▸ Usage examples for thermal spring ▸ Idioms related to thermal spring ▸ Wikipedia articles (New!) ▸ Words that often appear near thermal spring ▸ Rhymes of thermal spring ▸ Invented words related to thermal spring