We found 9 dictionaries that define the word polar zone:

General (6 matching dictionaries)

1. polar zone: Vocabulary.com
2. polar zone: Dictionary.com
3. Polar zone: Rhymezone
4. polar zone: FreeDictionary.org
5. polar zone: Mnemonic Dictionary
6. polar zone: TheFreeDictionary.com

Computing (1 matching dictionary)

7. polar zone: Encyclopedia

Medicine (2 matching dictionaries)

8. Dorland's Illustrated Medical Dictionary (No longer online)
9. online medical dictionary (No longer online)

(Note: See polar_zones as well.)

Definitions from WordNet (Polar zone) ▸ noun:  the part of the Earth's surface forming a cap over a pole; characterized by frigid climate Opposite: temperate zone, subtropical zone, tropical zone ▸ Words similar to polar zone ▸ Usage examples for polar zone ▸ Idioms related to polar zone ▸ Wikipedia articles (New!) ▸ Words that often appear near polar zone ▸ Rhymes of polar zone ▸ Invented words related to polar zone