1.relating to or caused by structure, especially political or economic structure;
structural unemployment in a technological society
2.relating to or having or characterized by structure;
structural engineer
3.affecting or involved in structure or construction;
the structural details of a house such as beams and joists and rafters; not ornamental elements
4.concerned with systematic structure in a particular field of study
5.pertaining to geological structure;
geomorphological features of the Black Hills
6.relating to or concerned with the morphology of plants and animals;
morphological differences