trilateral (n.)
- cuneiform
- deltoid
- lateral
- quadrilateral
- triarch
- tricorn
- trident
- triquetral
trilateral (adj.)
- bifacial
- bilateral
- cuneate
- cuneiform
- deltoid
- handed
- lateral
- many-sided
- multilateral
- one-sided
- polyhedral
- quadrilateral
- sided
- three-cornered
- three-dimensional
- three-pronged
- three-sided
- triangular
- triangulate
- tricuspid
- trident
- trifid
- trigonal
- tripartite
- two-sided
- unilateral
