D-shaped
Adjective
Meaning
D-shaped (not comparable) (possessional)
Shaped like the letter "D" or its mirror image
Synonyms
Related terms
Examples
The D-shaped cross-section, reinforcing ridges and backwards curve reduced the risk that the teeth would snap when Tyrannosaurus bit and pulled.
Perhaps you could consider replacing the knobs with D-shaped pulls to make gripping easier as you age.