Definitions

1. verb

to make less strong or pure by adding something to it

“The pharmacist was careful not to undilute the medicine, as it required a precise concentration.”

2. verb

to make less diluted, or to restore the original strength or purity

“The engineer undiluted the solution to achieve the desired consistency.”

3. noun

a mixture that has been made less strong or pure by adding something to it

“The undiluted mixture was too potent for the experiment, so they had to dilute it further.”