conchoidal

[ kong-koid-l ]
/ kɒŋˈkɔɪd l /

adjective Mineralogy.

noting a shell-like fracture form produced on certain minerals by a blow.

Origin of conchoidal

First recorded in 1660–70; conchoid + -al1

OTHER WORDS FROM conchoidal

con·choi·dal·ly, adverb sub·con·choi·dal, adjective

Words nearby conchoidal

conchita, conchitis, concho-, conchobar, conchoid, conchoidal, conchology, conchos, conchy, concierge, conciliar

Example sentences from the Web for conchoidal

British Dictionary definitions for conchoidal

conchoidal
/ (kɒŋˈkɔɪdəl) /

adjective

(of the fracture of minerals and rocks) having smooth shell-shaped convex and concave surfaces
(of minerals and rocks, such as flint) having such a fracture

Derived forms of conchoidal

conchoidally, adverb

Scientific definitions for conchoidal

conchoidal
[ kŏng-koid′l ]

Of or relating to a mineral or rock surface that is characterized by smooth, shell-like curves. Obsidian and quartz often have conchoidal fractures.