semicovering

Noun

 * 1)  A projection that has the property that for any projection onto its image, it is possible to find a corresponding projection onto its domain such that locally constant regions about a point projected onto the image have locally constant images in the domain.
 * 2) Something that partially covers, revealing or exposing a portion.
 * 1) Something that partially covers, revealing or exposing a portion.

Adjective

 * 1) Partially covering.