noun, plural sep·tar·i·a [sep-tair-ee-uh] /sɛpˈtɛər i ə/. Geology.
a concretionary nodule or mass, usually of calcium carbonate or of argillaceous carbonate of iron, traversed within by a network of cracks filled with calcite and other minerals.
Origin of septarium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for septarian
Historical Examples of septarian
Another type of concretion, very abundant in many clays and shales, is the “septarian nodule.”
noun plural -ia (-ɪə)
a mass of mineral substance having cracks filled with another mineral, esp calcite
Word Origin for septarium
C18: from New Latin, from Latin septum
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