crestal

crest +‎ -al

crestal (not comparable)

1. That is situated on, or forms part of, a crest.
   • 2015 October 22, “Evaluation in a Dog Model of Three Antimicrobial Glassy Coatings: Prevention of Bone Loss around Implants and Microbial Assessments”, in PLOS ONE‎, →DOI:

     Microbial samples and peri-implant crestal bone levels of all implant sites were obtained before, during and after the breakdown period.

crestal (plural crestals)

1. (zoology) A scale located on the crest.
   • 1955, Joel Asaph Allen, Bulletin of the American Museum of Natural History, page 15:

     In the arrangement of the crestals Shinisaurus closely resembles Xenosaurus (in which genus, however, the crestals are blunt and resemble ornamental tack heads) […]

• Clarets, Scarlet, arclets, cartels, castler, castrel, clarets, lacerts, rectals, scarlet