You will be given a definition of a task first, then some input of the task.
In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

A volumetric flask ( vol flask for short ) is a type of laboratory glassware .
Output:
A volumetric flask ( measuring flask or graduated flask ) is a piece of laboratory apparatus , a type of laboratory flask , calibrated to contain a precise volume at a certain temperature .