Re*tard"er (?), n.

One who, or that which, retards.


© Webster 1913

Re*tard"er (rE*tär"dər), 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.


© Webster 1913

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