transient

At atmospheric pressure, under which the new experiment took place, supercooled water would retain some traces of that behavior, resulting in small-scale, transient arrangements of molecules in high-density and low-density formations.

I saw him but transiently, as he passed; but his haggard countenance, and furious gestures, filled me with dismay.

I could manifest myself as palely, as transiently, as a thought.

Here a beam of the sun, long withheld, glanced through the clouds and transiently warmed "the marrying mamma."

But once—that transiently—yet sufficient to convince me that she is charming.

From the days of remotest history, and our world over, spirits have often been transiently visible and palpable by some mortals.