Definition of micro-image in US English:

micro-image

noun

  • 1A very small image, especially one which can be viewed only by means of magnification; specifically a microphotograph.

  • 2Astronomy. Each of a set of multiple images of an astronomical object formed by gravitational microlensing.

Origin

1950s; earliest use found in Science. From micro- + image.

Pronunciation

micro-image

/ˈmʌɪkrəʊˌɪmɪdʒ/