bipyramid /bī-pirˈə-mid/

A crystal form of two pyramids base to base

• unnumbered
• unnurtured
• UNO
• unoaked
• uno animo
• unobedient
• unobeyed
• unobjectionable
• unobjectionably
• unobnoxious
• unobscured
• unobservable
• unobservance
• unobservances
• unobservant
• unobserved
• unobservedly
• unobserving
• unobstructed
• unobstructive
• unobtainable
• unobtained
• unobtrusive
• unobtrusively
• unobtrusiveness