(chemistry) the ordered set of individual reactions whose overall effect is given by a chemical equation

(politics) Favoring a return to an alleged golden age of the past; anti-progressive. / (chemistry) Of, pertaining to, participating in or inducing a chemical reaction. / In reaction to, as a result of.

(politics) One who is opposed to change and wants to reverse it, wishing for a return to an alleged golden age of the past.

(chemistry) a reaction in which radicals are added to both sides of a double or triple bond

(chemistry) a reaction in which a single electron is transferred from one molecule to another; one being oxidized and the other reduced (also known as a redox reaction); long-range electron transfer reactions are important in biological reactions involving metalloproteins such as haemoglobin

(organic chemistry) The cycloaddition reaction between a conjugated diene and an alkene to form a cyclohexene ring.

(chemistry) a substitution reaction in which an alkyl or acyl functional group replaces a hydrogen atom of an aromatic nucleus; it is catalyzed by aluminium chloride

(chemistry) any reaction in which two (or more) molecules react with the resulting loss of a molecule of water (or other small molecule); the formal reverse of hydrolysis

(organic chemistry) The condensation reaction of an amino acid and a reducing sugar, followed by polymerization to form brown pigments - melanoidins; one of the causes of browning during cooking.

(chemistry) the reaction of a halogen with a methyl-ketone to form a haloform