Definitions

1. noun

A filter used to remove impurities or unwanted material from a fluid or gas before it enters a more sensitive or critical stage of processing.

“The prefilter was installed to prevent dust and debris from clogging the air conditioner’s internal components.”

2. verb

to filter (something) before it enters a more sensitive or critical stage of processing.

“The engineer prefiltered the water to ensure it was clean enough for the laboratory equipment.”

3. verb

to reduce the amount or intensity of (something) before it enters a more sensitive or critical stage of processing.

“The software prefiltered the data to prevent it from overwhelming the computer’s processing power.”