underprint

== English == === Etymology === From under- +‎ print. === Pronunciation === === Adjective === underprint (comparative more underprint, superlative most underprint) (printing) The addition of colour under black areas to produce a deeper black and prevent oversaturation of the paper. === Noun === underprint (plural underprints) (philately) Printing underneath the main design of a stamp, intended to prevent forgery or removal of the postmark. (philately, considered incorrect usage) a logo or advertising printed on the underside of a stamp; backprint. (geology) A fossilised print in the rock bed that is at a deeper level than the track the creature leaving it was actually travelling on; caused by the pressure of a heavy animal or penetration of the sediment by a pointed appendage. === See also === overprint perfin