Tectonic \Tec*ton"ic\, a.

1. (Biol.) Structural.

2. (Geol. & Phys. Geog.) Of, pert. to, or designating, the rock structures and external forms resulting from the deformation of the earth's crust; as, tectonic arches or valleys.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Tectonic \Tec*ton"ic\, a. [L. tectonicus, Gr. ?, fr. ?, ?, a carpenter, builder.]

Of or pertaining to building or construction; architectural.

Source: Webster's Revised Unabridged Dictionary (1913)