Definition of orthotectonic in US English:

orthotectonic

adjective

Geology
  • 1Relating to or formed by a kind of deformation associated with an orthogeosyncline, producing complicated systems of fold belts (such as those of the Alps) and characterized by much magmatism and lateral thrusting; compare paratectonic. Now rare.

  • 2Denoting or relating to an orogenic belt developed at the margin of a continent adjacent to a destructive plate boundary.

Origin

1950s; earliest use found in Lamoraal Ulbo de Sitter (b. 1902). From ortho- + tectonic.

Pronunciation

orthotectonic

/ˌɔːθə(ʊ)tɛkˈtɒnɪk/