Definition of microprinting in US English:

microprinting

noun

  • See microprint

    • ‘Excerpts from the current version of the anthem are reproduced as microprinting on this side of the note.’
    • ‘Some security features, such as bleedthrough numbering and microprinting, are relatively inexpensive.’
    • ‘As for the small seals on cardboard packs, there is no microprinting on those and no serial numbers either.’
    • ‘Besides the USA, many countries have begun to use microprinting as a deterrent to counterfeiting.’
    • ‘Figure 8 depicts the stamp and a close-up of the microprinting that forms Varela's left eye and eyebrow.’