1. a space entirely devoid of matter.
2. an enclosed space from which matter, especially air, has been partially removed so that the matter or gas remaining in the space exerts less pressure than the atmosphere (opposed to plenum).
3. the state or degree of exhaustion in such an enclosed space.
4. a space not filled or occupied; emptiness; void: The loss left a vacuum in his heart.
5. a vacuum cle
"substrates can be vacuumed."
This list can help you learn new vocabulary more quickly and be able explore other words more easily.