Polish ziemniak

← German Erdapfel (calque)

← French pomme de terre (mention)

← Polish ziemny (suffix)

← Polish ak (suffix)

← Polish (suffix)

← Slovak zemiak (mention)

← Proto-Slavic *zemьnъ (mention)

← Old Polish jabłko ziemne (mention)

→ Polish ziemniaczany (suffix)

→ Slovak zemiak (mention)