homaloid

homaloid

(ˈhɒməˌlɔɪd)
n
(Mathematics) geometry a geometrical plane, a flat surface or space
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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But the shortest dictionary-sanctioned words with 2 state names hidden in them are HOMALOID (Webster's Second, W2) and MAIDHOOD (W3), both of which contain IDAHO and OHIO.
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