lapillus

[ luh-pil-uhs ]
/ ləˈpɪl əs /

noun, plural la·pil·li [luh-pil-ahy]. /ləˈpɪl aɪ/.

a small stony particle ejected from a volcano.

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Origin of lapillus

1740–50; <Latin: little stone, pebble, diminutive of lapis stone
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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British Dictionary definitions for lapillus

lapillus
/ (ləˈpɪləs) /

noun plural -li (-laɪ)

a small piece of lava thrown from a volcano

Word Origin for lapillus

C18: Latin: little stone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for lapillus

lapillus
[ lə-pĭləs ]

Plural lapilli (lə-pĭlī′)

A small fragment of lava, between 2 and 64 mm in size, blown out from a volcano.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.