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Xenodocheionology has 17 letters and means "the history or lore of inns and hotels."

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SeraSmith

Lvl 8
3y ago
property, building, house, town
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Ethan Weyn

Lvl 2
3y ago

According to my dictionary, 'xanthoproteic' in 'xanthoproteic acid' and 'xenodiagnosis' both have 13 letters. But, my dictionary is from 1989, so there may be newer words.

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