Context: Vacuum is space void of matter. The word stems from the Latin adjective vacuus for "vacant" or "void". An approximation to such vacuum is a region with a gaseous pressure much less than atmospheric pressure. Physicists often discuss ideal test results that would occur in a perfect vacuum, which they sometimes simply call "vacuum" or free space, and use the term partial vacuum to refer to an actual imperfect vacuum as one might have in a laboratory or in space. In engineering and applied physics on the other hand, vacuum refers to any space in which the pressure is lower than atmospheric pressure. The Latin term in vacuo is used to describe an object as being in what would otherwise be a vacuum.

Question: The word Vacuum stems from what Latin adjective?
Answer: vacuus

Question: What does the term used by Physicists, partial vacuum, refer to?
Answer: imperfect vacuum

Question: What is a vacuum?
Answer: space void of matter

Question: What type of pressure is less than atmospheric pressure in a vacuum?
Answer: gaseous

Question: What Latin term is used to describe an object in a vacuum?
Answer: in vacuo

Question: What Latin adjective does atmospheric pressure come from?
Answer: Unanswerable

Question: What is the definition of atmospheric pressure?
Answer: Unanswerable

Question: What do physicists often discuss will occur in a certain atmospheric pressure?
Answer: Unanswerable

Question: What does the term partial atmospheric pressure refer to?
Answer: Unanswerable

Question: What latin term is used to describe an object under atmospheric pressure?
Answer: Unanswerable