Definition of Apparatus the tools, equipment, and machinery you use for particular purposes Examples of Apparatus in a sentence The firefighter donned a breathing apparatus before entering the blaze, to search for people trapped in the inferno. The president’s security apparatus fanned out so that they could keep watch on all angles of the event.

Use the word in a sentence Here are some examples of how to use the word apparatus in a sentence: - The laboratory apparatus was used to conduct experiments and analyze data. - The firefighters used their apparatus to put out the fire and save lives. - The legal apparatus is responsible for enforcing laws and ensuring justice is served.

This apparatus is used for the separation of fluids or gas in a laboratory. As a scientist, having the right piece of apparatus is crucial to conducting experiments accurately and efficiently. In some cases, a piece of apparatus can be the key to unlocking a scientific mystery.