Definitions of retarder

The word retarder uses 8 letters: a, d, e, e, r, r, r, t

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n. - Any of various devices, as a helix of flat metal strip, introduced into a boiler tube to increase the heating effect of the fire.

n. - A substance, as potassium bromide, added to a developer to retard its action.

n. - One who, or that which, retards.

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