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Dentistry an imprint of the teeth and gums, esp in wax or plaster, for use in preparing crowns, inlays, or dentures
A form left on a soft soil surface by plant parts; the soil hardens and usually the imprint is a concave feature.
A print made from an engraved plate.
A press run or printing of a book.
A machined cavity in a forging die for production of a specific geometric shape in the workpiece.
impressionAn 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
Upper and lower impressions
for study model fabrication.
Then preliminary upper and lower impressions
were made with irreversible hydrocolloid (alginate) using the perforated stock tray, taking care to block out defect undercuts with petrolatum laden gauge and a stone cast was poured from the impression to obtain a diagnostic cast.