渦巻き形 (uzumakigata) Japanese meaning: spiral shape | KotomoraWritten forms
渦巻き形
Standard spelling with okurigana.
渦巻形
Variant without okurigana; less common but still used.
Etymology
Compound of 渦巻き (uzumaki, 'whirlpool, spiral') + 形 (kata, 'shape, form').