from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A line connecting or marking points on the Earth's surface that have the same mean summer rainfall.
from the GNU version of the Collaborative International Dictionary of English
- n. A line connecting or marking points on the earth's surface, which have the same mean summer rainfall.
from The Century Dictionary and Cyclopedia
- In physical geography, characterized by an equal amount of rainfall in summer; noting lines connecting places on the surface of the globe where this condition exists.
Ancient Greek (Wiktionary)