retardance









retardance


noun Chemistry.

  1. any substance capable of reducing the speed of a given reaction.

adjective

  1. retarding or tending to retard (usually used in combination): fire-retardant construction materials.

noun

  1. a substance that reduces the rate of a chemical reaction

adjective

  1. having a slowing effect
n.

1550s, “retardation,” from Middle French retardance, from retarder (see retard (v.)). In reference to resistance to fire, 1948.

adj.

1640s, from retard (v.) + -ant or from Latin retardantem (nominative retardans), present participle of retardare. From 1952 as a noun, “retardant substance.”

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