—v.t. 1. to shorten by cutting off a part; cut short: Truncate detailed explanations. 2. Math.,Computers.to shorten (a number) by dropping a digit or digits: The numbers 1.4142 and 1.4987 can both be truncated to 1.4.
—adj. 1. truncated.
2. Biol. a. square or broad at the end, as if cut off transversely.
b. lacking the apex, as certain spiral shells.