Webster's Revised Unabridged Dictionary (1913)

Webster's Revised Unabridged Dictionary (1913 + 1828)

Displaying 1 result(s) from the 1913 edition:

Bipyramidal (Page: 147)

Bi`py*ram"i*dal (?), a. [Pref. bi- + pyramidal.] Consisting of two pyramids placed base to base; having a pyramid at each of the extremities of a prism, as in quartz crystals.