1. trilinear - Noun
2. trilinear - Adjective
Of, pertaining to, or included by, three lines; as, trilinear coordinates.
Source: Webster's dictionaryTranslating from trilinear co-ordinates into Cartesian co-ordinates leads to the next diagram. Source: Internet
Methods include bilinear interpolation and bicubic interpolation in two dimensions, and trilinear interpolation in three dimensions. Source: Internet