• Webster's Revised Unabridged Dictionary
    • n paraformaldehyde (Chem) A polymer of formaldehyde obtained as a white crystalline substance by concentration of a formaldehyde solution. Formula CH20)n. It dissolves in hot water with the release of formaldehyde, and is used as a disinfectant.
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Century Dictionary and Cyclopedia
    • n paraformaldehyde A polymerized formaldehyde, (CH2O)n + H2O, formed by evaporation of an aqueous solution of formaldehyde. It is an amorphous solid that dissolves gradually in water. By heating with water at 130° C. it is reconverted to formaldehyde. It is used as an antiseptic.
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Webster's Revised Unabridged Dictionary
Pref. para-, + formaldehyde,


In science:

The brain slices were incubated for 30 min in a 2% solution of 2,3,5-triphenyltetrazolium chloride (TTC) (Sigma Chemical Co., Saint Louis, MO, USA) at 37 °C and fixed by immersion in a 4% paraformaldehyde solution in phosphate-buffered saline pH 7.4.
Wide therapeutic time window for nimesulide neuroprotection in a model of transient focal cerebral ischemia in the rat
Following the final motor activity session on the seventh day post-ischemia, the animals were anesthetized with urethane and perfused transcardially with cold saline followed by 4% paraformaldehyde in phosphate-buffered saline (pH 7.4).
The highly selective cyclooxygenase-2 inhibitor DFU is neuroprotective when given several hours after transient cerebral ischemia in gerbils