Word Study
    
                                	trigyn |
                                	trigynia |
                                	trigynian |
                                	trigynous |
                                	trihedral |
                                trihedron
                                	| trihoral 
                                	| trihybrid 
                                	| trihydroxy 
                                	| triiodomethane 
                                	| triiodothyronine 
                            
        trihedron
CIDE DICTIONARY
trihedron, n. [Pref. tri- + Gr.  a seat, base.]. 
                                            
                                         A figure having three sides.                                                                                 [1913 Webster]                                                                                                                    
                                                                                    
            For further exploring for "trihedron" in Webster Dictionary Online
        

