paraformaldehyde

noun
para·for·mal·de·hyde | \ˌper-ə-fȯr-ˈmal-də-ˌhīd, -fər-, ˌpa-rə-\

Definition of paraformaldehyde 

: a white powder (CH2O)x that consists of a polymer of formaldehyde and is used especially as a disinfectant

First Known Use of paraformaldehyde

1894, in the meaning defined above

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The first known use of paraformaldehyde was in 1894

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paraformaldehyde

noun
para·form·al·de·hyde | \ˌpar-ə-fȯr-ˈmal-də-ˌhīd, -fər- \

Medical Definition of paraformaldehyde 

: a white powder (CH2O)x that consists of a polymer of formaldehyde and is used especially as a fungicide

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