1. of, relating to, or containing limonite (a hydrated iron oxide mineral)
Usage: geology; mineralogy

Examples

• The limonitic deposits in the region indicate ancient weathering of iron-rich rocks.
• Geologists identified limonitic staining on the rock samples.
• The soil's limonitic composition gave it a reddish-brown color.
• Limonitic ore was mined for iron extraction in the 19th century.