Some objects like dim stars, collapsed stars, giant planets and other obscure ordinary material may make up another fraction of the dark matter.

In the meantime, a little digging can find even the most obscure material free and easy to use.

She left the library just after four, when her head started to ache from too much close concentration on obscure materials.

One reviewer described the compilation as a means for the more "casual" fan to discover the band's obscure material.

Publishers cannot recirculate works or publish obscure materials that have been all but lost to the world.

It is an obscure material of minor academic interest.

This time, rather than focusing only on more obscure material, the compilation included several of their most successful singles.

They made it a practice to make almost all of their more obscure material widely available through compilations.

The company seeks lesser known and even obscure material for remastering into high-quality sound.

Fringe festival productions often showcase new scripts, especially ones on more obscure, edgy or unusual material.