[fawr-mal-duh-hahyd, fer-] /fɔrˈmæl dəˌhaɪd, fər-/
a colorless, toxic, potentially carcinogenic, water-soluble gas, CH 2 O, having a suffocating odor, usually derived from methyl alcohol by oxidation: used chiefly in aqueous solution, as a disinfectant and preservative, and in the manufacture of various resins and plastics.
a colourless poisonous irritating gas with a pungent characteristic odour, made by the oxidation of methanol and used as formalin and in the manufacture of synthetic resins. Formula: HCHO Systematic name methanal
pungent gas formed by oxidation of methyl alcohol, 1869, a contraction of formic aldehyde; see formic + aldehyde. Discovered in 1863 by German chemist August Wilhelm von Hofmann (1818-1892).
formaldehyde for·mal·de·hyde (fôr-māl’də-hīd’)
A colorless, gaseous compound that is the simplest aldehyde, used for manufacturing melamine and phenolic resins, fertilizers, dyes, and embalming fluids and in aqueous solution as a preservative and disinfectant.
A colorless gas having a sharp, suffocating odor. It is used in making plastics and, when dissolved in a solution of water and methanol, to preserve biological specimens. Chemical formula: CH2O.
- Formal equivalence
noun 1. (logic) the relation that holds between two open sentences when their universal closures are materially equivalent
[fawr-muh-lin] /ˈfɔr mə lɪn/ noun, Chemistry. 1. a clear, colorless, aqueous solution of 40 percent formaldehyde. /ˈfɔːməlɪn/ noun 1. a 40 per cent solution of formaldehyde in water, used as a disinfectant, preservative for biological specimens, etc formalin for·ma·lin (fôr’mə-lĭn) n. An aqueous solution of formaldehyde that is 37 percent by weight.
- Formalin pigment
formalin pigment for·ma·lin pigment (fôr’mə-lĭn) n. A pigment formed in blood-rich tissues that come in contact with aqueous solutions of formaldehyde that have acidic pH values.
[fawr-muh-lahyz] /ˈfɔr məˌlaɪz/ verb (used with object), formalized, formalizing. 1. to make , especially for the sake of official or authorized acceptance: to formalize an understanding by drawing up a legal contract. 2. to give a definite form or shape to. 3. to state or restate (the rules or implied rules of a grammar or […]