cryptozygous

adjective

cryp·​to·​zy·​gous ˌkrip-tə-ˈzī-gəs  (ˈ)krip-ˈtäz-ə-gəs 

: having a wide skull and a narrow face so that the zygomatic arches are concealed when the skull is viewed from above

cryptozygy

ˈkrip-tə-ˌzī-gē  krip-ˈtäz-ə-gē 

-jē

noun

plural cryptozygies