Con-choid'al, a.
a. [Fr. conchoidal.] (Min.) Having elevations or depressions in form like the valve of a bivalve shell; — applied principally to a surface produced by fracture. Dana.
a. [Fr. conchoidal.] (Min.) Having elevations or depressions in form like the valve of a bivalve shell; — applied principally to a surface produced by fracture. Dana.