truncate

Imagine cutting the end off something and leaving the rest still there. That is what it means to truncate something. It usually means making something shorter by removing the last part. A number can be truncated by dropping the digits after a certain point, and a piece of text can be truncated to fit a space limit. You can even say a meeting or conversation was truncated if it was cut short before it naturally ended.

You can also see the idea in shapes, like a cone with its top cut off. In every case, the sense is the same: the end is removed, and what remains is shorter than before.

To truncate something means to shorten it by cutting off or removing the end part. The idea is not just to make something shorter in a general way, but to take away the final section while leaving the rest in place. A branch can be truncated, for example, if its end is cut off. In geometry, a cone or pyramid is described as truncated when its top has been sliced away, leaving a flat surface.

The word is also common in math and computing. In mathematics, to truncate a number means to remove the digits beyond a certain point without rounding. For example, 3.19 truncated to one decimal place becomes 3.1, and truncated to a whole number it becomes 3. In computing, text, file names, or data may be truncated when they are too long for a field, display, or limit, so the ending is removed.

Truncate can also be used more broadly for events, speech, or writing that end earlier than expected. A talk may be truncated by a lack of time, or a discussion may be truncated by an interruption. In this use, the word suggests that something was cut short rather than allowed to finish naturally.

So across physical objects, shapes, numbers, and spoken or written material, truncate carries the same basic meaning: the end part is taken away, and what remains is shorter, but still recognizable.