septarium

n. [地]龟背石

发音

UK /sɛpˈtɛəɹi.əm/
US /sɛpˈtɛɹi.əm/

词形变化

septaria 复数 septaria

释义与例句

n.
  1. 1.

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

    地质

词源

From Latin saeptum (“inclosure, partition”) + -arium.

来源：wiktionary