This is the 8883rd most frequent Russian word.
присоединяйтесь
"Join" or "join in."
The word 'присоединяйтесь' is used in an imperative form to invite someone to join or participate in an event or activity.
Присоединяйтесь к нашему празднику сегодня вечером.
Join our celebration this evening.
Here, 'присоединяйтесь' is an invitation addressed politely to encourage others to join a casual activity with the speaker.
Если хотите, присоединяйтесь к нашей прогулке по парку.
If you like, join our walk in the park.
In this context, 'присоединяйтесь' signals an invitation to become a member or participant in a group for intellectual discourse.