Ridged
/rɪdʒd/noun
Having a raised line, edge, or series of parallel ridges.
Did you know?English ridge and ridged ultimately come from a Germanic root meaning “back” or “spine,” which is why the same ancient image can describe a mountain crest, a roof line, or a shell’s raised surface.
Etymological Timeline
Proto-Indo-European
PIE
*sker-
“to turn, bend, or curve”
Proto-Germanic
PGmc
*hrigjō
“back, spine, or ridge”
Old English
English
hrycg
“back, spine, ridge”
Middle English
English
rigge
“a ridge of land; the back of a person or animal”
Modern English
English
ridge
“a long narrow raised part of a surface”
Modern English
English
ridged
“having ridges or raised lines”