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 There are 2 seven-letter words containing SEISM| SEISMAL | • seismal adj. Seismic. • SEISMAL adj. pertaining to an earthquake, also SEISMIC. |  | SEISMIC | • seismic adj. Related to, or caused by an earthquake or other vibration of the Earth. • seismic adj. (Figuratively) Of very large or widespread effect. • seismic adj. (Of a place) Subject to earthquakes. |  
 Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America. Definitions are short excerpt from the WikWik.org and 1Word.ws. 
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