1. [from LISP terminology for `true'] Yes. Used in reply to a
question (particularly one asked using The -P convention). In LISP, the
constant T means `true', among other things. Some Lisp hackers
use `T' and `NIL' instead of `Yes' and `No' almost reflexively.
This sometimes causes misunderstandings. When a waiter or flight
attendant asks whether a hacker wants coffee, he may absently
respond `T', meaning that he wants coffee; but of course he will
be brought a cup of tea instead. Fortunately, most hackers
(particularly those who frequent Chinese restaurants) like tea at
least as well as coffee -- so it is not that big a problem. 2.
See time T (also since time T
equals minus infinity). 3. [techspeak] In
transaction-processing circles, an abbreviation for the noun
`transaction'. 4. [Purdue] Alternate spelling of tee. 5. A dialect of LISP developed at Yale. (There is an intended
allusion to NIL, "New Implementation of Lisp", another dialect of
Lisp developed for the VAX)