Meaning ofconchoidalin English

Adjective

1. exhibiting shell-like fracture patterns (in minerals)
   The mineral exhibited conchoidal fractures when broken.
2. fracturing in planar, curved patterns
   The obsidian rock fractured in a conchoidal pattern, with smooth curves.
3. relating to conchoids (in math); a specific curve type
   In mathematics, a conchoidal curve is a type of curve that resembles a shell.