lahar

[ lah-hahr ]
/ ˈlɑ hɑr /

noun Geology.

a landslide of wet volcanic debris on the side of a volcano.
the deposit left by such a landslide.

Origin of lahar

1925–30; < Javanese: lahar, lava

British Dictionary definitions for lahar

lahar
/ (ˈlɑːhɑː) /

noun

a landslide of volcanic debris mixed with water down the sides of a volcano, usually precipitated by heavy rainfall

Word Origin for lahar

C20: from Javanese: lava

Scientific definitions for lahar

lahar
[ lähär′ ]

A wet mass of volcanic fragments flowing rapidly downhill. Lahars usually contain ash, breccia, and boulders mixed with rainwater or with river or lake water displaced by the lava flow associated with the volcano.
The deposit produced by such a flowing mass.