permeate

/ˈpɜːmiˌeɪt/noun

The watery liquid left over as a by-product when milk is processed.

Example sentence

“The dairy sells the permeate from cheese-making to be used in animal feed.”

The verb is far more familiar: smells and ideas permeate a room or a culture. This dairy sense is technical.

Related words

perpetualContinuing forever or seeming never to end.perilousInvolving serious danger or risk.perpetuateTo make something continue existing, often longer than it should.perfunctoryDone quickly and without real care or interest, merely because it has to be done.perplexTo confuse someone so much that they cannot understand or explain something.perennialContinuing or staying active through the whole year, or without ever stopping.