There are a total of 15 7-letter words containing 'zone', and the number may vary in different dictionaries. You can specify the dictionary and order.

• bizones ₂₀
• calzone ₂₁
• canzone ₂₁
• endzone ₁₉
• evzones ₂₁
• prozone ₂₀
• rezoned ₁₈
• rezones ₁₇
• subzone ₂₁
• unzoned ₂₀
• warzone ₂₀
• ecozone ₁₈
• enzoned ₁₇
• enzones ₁₆
• trizone ₁₆

There are 15 7-letter words containing zone in the well-known word game dictionary, 9 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 12 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 11 in the Words with Friends (WWF) dictionary.