WordReference Random House Unabridged Dictionary of American English © 2026
i•so•ha•line
(ī′sə hā′lēn, -līn, -hal′ēn, -īn),USA pronunciation n.
- Geographya line on a map of the ocean connecting all points of equal salinity.
- Greek hálinos salty; see hal-, -ine1
- iso- + -haline 1900–05