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retarder |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Retarder \Re*tard"er\, n. One who or that which retards. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Retarder \Re*tard"er\ (r[-e]*t[aum]r"d[~e]r), n. 1. (Steam Boiler) Any of various devices, as a helix of flat metal strip, introduced into a boiler tube to increase the heating effect of the fire. 2. (Photog.) A substance, as potassium bromide, added to a developer to retard its action
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