ridgeless
Lacking raised line
Ridgeless means lacking a ridge—a raised line or crest.
The term appears in descriptions where the absence of such a feature matters: ridgeless fingerprints, a ridgeless skull, ridgeless potato chips.
It's straightforward: whatever normally has a ridge, doesn't.
Smooth, refined, accomplished
sanded · streamlined · aerodynamic · rounded · contoured · seamless · ungrooved · unfurrowed
Flat highland area
- plainBasic and unremarkable
- prairieOpen grassy flatland
- steppeTreeless Eurasian grassland
- tablelandElevated flat landform
mesa · pampas · savanna · floodplain · delta · lowland · polder · champaign
polished
Smooth, refined, accomplished
buffed · sanded · streamlined · aerodynamic · rounded · contoured · seamless · ungrooved · unfurrowed · unwrinkled
plateau
Flat highland area
tableland · mesa · pampas · savanna · floodplain · delta · lowland · polder · champaign · peneplain
fingerprint
Friction ridge impression
shell · carapace · exoskeleton · horn · nail · hoof · seed · kernel · unribbed · spineless
eroded
Gradually degraded by elements
flattened · leveled · undulating · rolling · gentle · gradual · peneplain