noun which may take the genitive case particle 'no'
donut-shaped; toroidal
Describes objects with a ring shape, like a donut. Often used in technical contexts (e.g., toroidal transformers) or everyday descriptions.
This donut-shaped magnet is used in experiments.
I hear that donut-shaped cushions are good for your lower back.
Standard spelling using 型 for shape.
Variant using 形; also common.
Compound of ドーナツ (donut) + 型 (shape/model). A straightforward loanword + native suffix combination.