impression

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impression

Dentistry an imprint of the teeth and gums, esp in wax or plaster, for use in preparing crowns, inlays, or dentures

impression

[im′presh·ən]
(geology)
A form left on a soft soil surface by plant parts; the soil hardens and usually the imprint is a concave feature.
(graphic arts)
A print made from an engraved plate.
A press run or printing of a book.
(metallurgy)
A machined cavity in a forging die for production of a specific geometric shape in the workpiece.

impression

An advertisement on a Web page. If ads on the Web are not based on a click-through rate (CTR), they are typically sold on a cost per thousand (CPM) basis. One impression is one banner ad displayed on one page. Also called a "view" or "ad view." See banner ad, interstitial ad, pay-per-click and click-through rate.
References in periodicals archive ?
Border molding is done with green stick compound before making the secondary impression with ZOE paste [13], based on selective-pressure technique used on high arched palate.
Klein IE and Broner AS: Complete denture secondary impression technique to minimize distortion of ridge and border tissues.
Border moulding was done with green stick or low fusing compound (DPI company, Mumbai, India) and secondary impression was made with monophase silicone impression material (Aquail, Dentsply, Germany) (Fig 5) Master cast was poured with Dental stone (Neelkanth Minecham, Rajasthan, India.

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