Word of the Day: aa

aa (AH-ah)

noun: lava having a rough surface

Etymology
From Hawaiian aa (to burn).
Earliest documented use: 1859

Usage (from Wordsmith)
“The type of lava most prevalent on Bartolomé Island is aa lava; it has a lower temperature and less gas content, which makes for a slower flow, which causes broken flows and sharp edges.”
Ilene Cox; One More Day in the Galapagos Islands; Redlands Daily Facts (California); Sep 25, 2005.

Notes (from Wordsmith)
Aa is one of the two kinds of lava typically found in Hawaiian volcanoes. The other kind is pahoehoe, one with a smooth, ropy surface.

Reply With Your Thoughts

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.