- designating or of a design for bridges in which the structural supporting units also form the deck, or road surface, thus reducing weight and cost of construction
- Bot. designating, of, or showing vertical growth, as most main stems and roots
Origin of orthotropicortho- + -tropic
- Growing toward or away from a stimulus such as gravity, especially along a vertical axis. Used of a plant or plant part.
- Of or relating to a bridge deck consisting of steel plates supported by ribs underneath.
ortho- +"Ž -tropic