Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An irregular polygonal system of calcite-filled cracks occurring in certain rock concretions.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A flattened concretionary nodule, usually of limestone, intersected within by cracks which are often filled with calcite, barite, or other minerals.

from the GNU version of the Collaborative International Dictionary of English

  • n. A flattened concretionary nodule, usually of limestone, intersected within by cracks which are often filled with calcite, barite, or other minerals.

from The Century Dictionary and Cyclopedia

  • n. A concretion or nodule of considerable size, and roughly spherical in shape, of which the parts nearest the center have become cracked during the drying of the mass, the open spaces thus formed having been subsequently filled with some infiltrated mineral, usually calcite. Such septaria or septarian nodules are abundant in various shaly rocks, especially in the Liassic beds in England.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

Latin saeptum, partition; see septum + -arium.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin septum, saeptum, an inclosure, a partition, from sepire, saepire, to inclose.

Examples

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