All 7 Uses

phenomenon
in
Jurassic Park
(Edited)

The second feature is the puzzling biweekly spiking, which seems to suggest some kind of alternating phenomenon is at work.
p. 100.3

phenomenon = something that exists and is of special interest
So I conclude that some other phenomenon, such as a new variety of flu, is causing the fluctuations you see in the graph.
p. 101.1 *
It says that you can never predict certain phenomena at all.
p. 178.1

phenomena = observable things
Because in fact there are great categories of phenomena that are inherently unpredictable.
p. 178.4
"Modesty forbids me," Malcolm said, "from telling you the details of a phenomenon named after me."
p. 271.8

phenomenon = something that exists and is of special interest
But the phenomenon happens to be particularly well documented in frogs.
p. 420.3
What phenomenon is that?
p. 420.4

Definitions:

(1) (phenomenon)
something that exists or happened -- especially something of special interest -- sometimes someone or something that is extraordinary

"Phenomenons" and "phenomena" are both appropriate plural forms of this noun. "Phenomena" is generally used in scientific or philosophical contexts.
(2) (meaning too rare to warrant focus)
In philosophy, a phenomenon is something as known through the senses. It is contrasted with a noumenon.