American Heritage Dictionary
(2)
Century Dictionary
(5)
GNU Webster's 1913
WordNet
(1)
Elsewhere on the web
However, so seismic are the shifts that it is inevitable that old business models will be replaced, and with them will fall the companies which cling most tightly onto redundant models.— home
Italy's Civil Protection Agency reassured locals at the end of March that tremors being felt were "absolutely normal" for a seismic area.— ta tvnz national headlines auto group
This prompted Italy's Civil Protection Agency to reassure locals at the end of March that tremors being felt were 'absolutely normal' for a seismic area.— Home | Mail Online
On both of these seismic issues, the leaders of the democracies are either burying their heads in the sand or are actively bringing them into being.— Ghost of a flea
DEMAND for Scottish food has increased in a "seismic" shift over the past year, a minister said yesterday.— We Blog A Lot

Century Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word about once a month.
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