TIME T n. 1. An unspecified but usually well-understood time, often
used in conjunction with a later time T+1, or an earlier time T-1.
"We'll meet on campus at time T or at Louie's at time T+1."
2. SINCE (OR AT) TIME T EQUALS MINUS INFINITY: A long time ago; for as
long as anyone can remember; at the time that some particular frob was
first designed.