Phenomena
来自Big Physics
late 16th century: via late Latin from Greek phainomenon ‘thing appearing to view’, based on phainein ‘to show’.
wiktionary
The plural form of phenomenon, formed according to the Ancient Greek -ον(-on) → -α(-a) pluralisation pattern.
etymonline
phenomena (n.)
classical plural of phenomenon (see -a (2)). Sometimes also erroneously used as a singular.
