Related words 山やま 芋いも 山芋 is a broader term for wild yam, while とろろ芋 specifically refers to the type used for grated yam dishes.
長なが 芋いも 長芋 is a common variety of yam often used as とろろ芋 , but とろろ芋 can also refer to other sticky yam varieties.
Written forms とろろ 芋いも Usage 82%
Standard kanji-kana mixed spelling for this yam variety.
とろろいも Usage 14%
Kana spelling is common in everyday writing, especially when the kanji are obscure.
トロロイモ Usage 5%
薯蕷とろろ 芋いも
Rare kanji spelling using 薯蕷 (yam) + 芋 (potato).
薯蕷とろろ 藷いも
Very rare kanji spelling; 藷 is an uncommon character for potato/yam.
Etymology The word とろろ is an onomatopoeic or mimetic word for the slimy, sticky texture of grated yam. 芋 means 'potato' or 'tuber'. The kanji 薯蕷 are ateji for yam, and 藷 is a rare character for potato/yam.
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