trending
US /ˈtren.dɪŋ/
UK /ˈtren.dɪŋ/

1.
currently popular or widely discussed online, especially on social media
:
•
The new song is trending on all music platforms.
•
The hashtag #GlobalWarming is trending worldwide.
1.
the act of becoming popular or widely discussed
:
•
The video went from zero views to trending in just a few hours.
•
The sudden trending of the topic surprised everyone.