English definition of “then”
TIME › at that time: Call me tomorrow - I'll have time to speak then. Tim and I were at school together, but I haven't seen him since then.
NEXT › next, or after something has happened: She trained as a teacher and then became a lawyer. Let me finish my drink, then we'll go.
SO › so or because of that: Have a rest now, then you won't be tired this evening. "My interview's at 9 o'clock." "You'll be catching an early train, then?"
IN ADDITION › used in order to add something to what you have just said: I've got two essays to write and then my science project to finish.
now then/right then/okay then › used to introduce a question or a suggestion: Right then, what do you want to drink? Now then, shall we make a start?