pahoehoe
/pəˈhoʊ.i.hoʊ.i/
noun
- A type of lava that has a smooth, ropy, or billowy surface, formed from highly fluid basalt.
- The hikers carefully walked across the cooled pahoehoe, marveling at its twisted shapes.
- Volcanologists study pahoehoe to understand how lava flows move and cool.
- Unlike rough aa lava, pahoehoe has a smooth, glassy appearance when it solidifies.