There are a total of 18 8-letter words containing 'meter', and the number may vary in different dictionaries. You can specify the dictionary and order.

• ammeters ₁₄
• cemetery ₁₆
• diameter ₁₂
• dimeters ₁₂
• geometer ₁₃
• meterage ₁₃
• metering ₁₄
• odometer ₁₂
• ohmmeter ₁₆
• orometer ₁₁
• oximeter ₁₈
• trimeter ₁₁
• udometer ₁₃
• yawmeter ₁₆
• biometer ₁₂
• lameters ₁₀
• luxmeter ₁₇
• viameter ₁₃

There are 18 8-letter words containing meter in the well-known word game dictionary, 15 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 18 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 14 in the Words with Friends (WWF) dictionary.