para·form·al·de·hyde /ˌpærəfɔrˈmældəˌhaɪd, fɝ-/ 名詞
par·a·form·al·de·hyde n. 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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