hyperthick

Very much more than usually thick

Adjective

  1. Very much more than usually thick
    • Molar enamel thickness is a morphological trait that differentiates African apes from hominins, being manifested most dramatically in the megadont hominins (Paranthropus spp.) with hyperthick enamel. - 2012, Justin D....

Origin

From hyper- + thick.