Is “Seismograph” a Scrabble word?
Yes
SEISMOGRAPH
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Seismograph
/ˈsaɪz.mə.ɡɹæf/
noun
1.An instrument that automatically detects and records the intensity, direction and duration of earthquakes and similar events.