Media, Printing, Publishing The addition of colour under black areas to produce a deeper black and prevent oversaturation of the paper.
underprint
noun
Etymology From under- + print.
1
Hobbies, Lifestyle, Philately Printing underneath the main design of a stamp, intended to prevent forgery or removal of the postmark.
2
Hobbies, Lifestyle, Philately a logo or advertising printed on the underside of a stamp; backprint.
Considered incorrect usage
3
Geography, Geology, Natural sciences 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.