microdot

n photograph, usu of secret documents, etc, reduced to the size of a dot 微粒照片（缩小至颗粒大小的照片, 通常为密件）.

miaow, miasma, mica, mice, Michaelmas, Michaelmas daisy, Michigan, mick, mickey, micro, micro-, micro-electronics, micro-organism, microbe, microbiologist, microbiology, microcassette, microchip, microcomputer, microcosm, microeconomics, microelectronics, microfiche, microfilm, microform, microlight, micrometer, micron, microorganism, microphone, microprocessor, microscope, microscopic, microscopically, Microsoft, microwave, mid, mid-, mid-afternoon, mid-Atlantic,