Meaning of “quantity” - Learner’s Dictionary

quantity

noun [ C, U ] us uk /ˈkwɒntəti/
Extra Examples
Police discovered a large quantity of drugs in the van.The analysis can detect minute quantities of the substance.Singapore exports large quantities of rubber.It's not economic to produce goods in small quantities.Large quantities of money and expertise have been misdirected.

B1 the amount or number of something:

Food has improved in quality and quantity thanks to modern farming methods.
A vast quantity of information is available on the Internet.
They are now developing ways to produce the vaccine in large quantities and cheaply.

(Definition of “quantity” from the Cambridge Learner’s Dictionary © Cambridge University Press)