non-polluting

The word is a modern English compound formed by combining the negative prefix "non-" with the present participle "polluting." The prefix "non-" originates from Latin non, a straightforward adverb of negation. The core verb "pollute" entered English from Latin polluere, meaning to defile or make ceremonially impure, a concept that broadened to encompass physical and environmental contamination. The formation of "non-polluting" follows a clear, logical pattern in English, creating an efficient adjective to describe technologies, processes, or substances that are explicitly free from causing environmental harm, reflecting contemporary ecological concerns.

Structure: non (not) + polluting (causing contamination) - non: A prefix of Latin origin, meaning "not," used to form negatives. - polluting: The present participle form of the verb "pollute," derived from the Latin verb polluere (to soil, defile), which itself may be related to por- (forth) and luere (to wash, atone for). In this word, it functions as the base meaning "causing contamination."