1. relating to or having the characteristics of perlite, a volcanic glass with a distinctive concentric fracture pattern
Usage: geological

Examples

• The perlitic texture of the volcanic rock was clearly visible under the microscope.
• Geologists identified perlitic fractures in the obsidian sample.
• The perlitic structure formed when the volcanic glass cooled rapidly.
• Perlitic rocks are commonly found near ancient volcanic sites.
• The distinctive perlitic pattern helped identify the rock’s volcanic origin.