aprismatic

a- +‎ prismatic

aprismatic (not comparable)

1. (odontology, of a layer of tooth enamel) Lacking prisms
   • 2015 July 16, “Red Iron-Pigmented Tooth Enamel in a Multituberculate Mammal from the Late Cretaceous Transylvanian “Haţeg Island””, in PLOS ONE‎, →DOI:

     In both insectivores and rodents, the pigmented layer is composed of iron directly contained in the matrix of the superficial aprismatic enamel [55 ,56 ].

• ripamatics