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Word: formaldehyde (lookup in dictionary) (lookup stats)
Dates: during 178463-178463
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Word Time Machine

Normalized population density for word "formaldehyde" throughout decades:

1920s : 1.0046
1930s : 0.7612
1940s : 1.2204
1950s : 1.8699
1960s : 1.0916
1970s : 0.7564
1980s : 0.9253
1990s : 0.8492
2000s : 0.8340