transiently

This term is primarily used in technical, medical, or academic registers to describe a state or phenomenon that exists only briefly. It carries a clinical tone, emphasizing the temporary nature of an occurrence without implying a cause or a specific duration, other than that it is short-lived.

In contrast to "briefly," which is common in everyday conversation, "transiently" is often employed in scientific contexts to describe fluctuations, symptoms, or electrical signals that spike and then return to a baseline. It suggests a fleeting presence that does not leave a permanent mark or result in a lasting change.