1. In a manner relating to or characteristic of hypabyssal rock formation; describing igneous rock that solidifies at intermediate depths beneath the Earth's surface.
Usage: geology; technical

Examples

• The granite cooled hypabyssally, forming crystals of intermediate size.
• Hypabyssally formed rocks exhibit textures between those of volcanic and plutonic igneous rocks.
• The dike was emplaced hypabyssally at a depth of several kilometers.
• Geologists classified the intrusion as hypabyssally crystallized based on its mineral composition.