conchoidally
/kɑŋˈkɔɪdəli/
adverb
- In a manner that produces a curved, shell-like fracture or surface.
- The glass shattered conchoidally when struck at the right angle.
- The mineral tends to fracture conchoidally, which helps in identifying it.
- The flint broke conchoidally, leaving a sharp edge for the arrowhead.