■ noun ( plural phenomena )
1》 a fact or situation that is observed to exist or happen, especially one whose cause is in question.
2》 Philosophy the object of a person's perception.
3》 a remarkable person or thing.
Origin
C16: via late L. from Gk phainomenon 'thing appearing to view', based on phainein 'to show'.
Usage
The word ~ comes from Greek, and its plural form is phenomena . In standard English it is a mistake to treat phenomena as if it were a singular form.