turtleback
noun
tur·tle·back ˈtər-tᵊl-ˌbak 
: a raised convex surface
turtleback adjective
or turtle-backed
ˈtər-tᵊl-ˌbakt
Word History
First Known Use
1872, in the meaning defined above
- extraforaneous
- extragalactic
- extragalactic nebula
- extragenic
- extrahazardous
- extrahepatic
- extrajudicially
- extralateral
- extralecithal
- extralegal
- extralegally
- extralimital
- extralinguistic
- extralinguistically
- extraliterary
- extralities
- extrality
- extralogical
- extramarginal
- extramarital
- extramatrical
- extramatrimonial
- extramental
- extrameridian
- extrameridional