---
title: What is the definition of Volume?
description: The term is used to designate a) purely geometric volumetric content, and b) the pressure-dependent volume of a gas or vapor.
---

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# What is the definition of Volume?

## The term is used to designate a) purely geometric volumetric content, and b) the pressure-dependent volume of a gas or vapor.

Volume V (l, m³, cm³)  
The term volume is used to designate:  
a) the purely geometric, 3-dimensional,usually predetermined, space filling content of a vacuum chamber or a complete vacuum system including all the piping and connecting spaces (this volume can be calculated);  
b) the pressure-dependent volume of a gas or vapor which, for example, is moved by a pump or absorbed by an adsorption agent.

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