He operates invisibly and is not seen by the public.

"It operates invisibly to users of other spreadsheets."

All activities, whether chemical, vital or mental, operate invisibly, as observed in chemical affinity, in energy, in plant life, in animal life, in intelligence and mentalization.

Like Newtonian physics, it operates invisibly.

Stacker is an on-the-fly compression and decompression engine that operates invisibly and automatically.

A grassroots militia force, the Kamajors operated invisibly in familiar territory and was a significant impediment to marauding government and RUF troops.

Eklund, a player who operated nearly invisibly in last year's playoffs and this year had just one playoff goal prior to this series, raised his playoff total to six.

The Vortex Garden mirrors this desire for a place where energies operating invisibly are recollected and brought together and, when reflected upon, can manifest themselves.

But if they are trying to land state contracts - contracts that can be worth many millions of dollars - they can operate almost invisibly.

During these events, Nancy finds herself in a dangerous adversary, clever enough to operate invisibly.