It rose at approximately ten-thirty, but was entirely invisible because of the cloud cover.

The Nazgûl wore their rings long enough that their physical forms faded away until they had become entirely invisible to mortal eyes.

She was still there, but she was entirely invisible.

It should have been entirely invisible, for it shed no light at all.

The process sounds complicated but is entirely invisible to users.

The key would remain there entirely invisible, except to someone who would know where to look.

For a greater majority of the time the supposed glamour of Television was an entirely invisible commodity.

Entirely invisible, I hovered above it, dropping down slowly.

All light is deflected round the envelope so that it remains entirely invisible and impenetrable to the rest of the Universe.

Chi followed a route that was entirely invisible to Gamay, and she was surprised when he announced they were at the end of the track.