formaldehyde

n [U] (chemistry 化) strong-smelling colourless gas used as a preservative and disinfectant when dissolved in water 甲醛.

forgetful, forgetfully, forgetfulness, forging, forgivable, forgive, forgive sb. for sth., forgiveness, forgiving, forgivingly, forgo, forgot, forgotten, fork, forlorn, forlornly, forlornness, form, form-blaind, formal, formalin, formalism, formality, formalization, formalisation, formalize, formalise, formally, format, formation, formative, formed, former, formerly, formic acid, Formica, formidable, formidably, formless, formlessly, formula, formulaic,