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Related to lapillus: Accretionary lapilli


Pyroclasts that range from 0.04 to 2.6 inches (1 to 64 millimeters) in diameter.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



small rounded or irregularly shaped pieces of lava between the size of a pea and a walnut, ejected together with volcanic bombs and ash during volcanic eruptions. They are chunks of lava that have solidified in flight or fragments of volcanic and wall rock through which the eruption passed and which solidified earlier.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
lapillus increased by an average of 22.6 percent during the past century, with no evidence of changes in other shell characteristics.
(5 ejs.), Littorina saxatilis y Littorina littorea (3 ejs.) y Nucella lapillus, Nassarius reticulatus y familia Neritidae (1 ej.
lapillus (Stickle & Bayne, 1982) and another 32 species of gastropods studied by Marsden et al.
Hunt and Scheibling (1998) found a high relationship between the drill hole diameter and predator length, and calculated a 0.34-mm threshold for drill hole diameter for smaller Nucella lapillus than 5 mm and above 5 mm preying on Mytilus trossulus and Mytilus edulis.
pugilis (Colton, 1905; Galindo-Perez, 2009) and other snails like Buccinun undatum (Hallers-Tjabbers, 1979), Nucella lapillus (Son & Hughes, 2000), Pomacea canaliculata (Avaca et al., 2013).