The process of using getter materials to absorb gases or impurities from a vacuum, enclosed system, or chemical process.
From 'getter' plus the gerund/present participle suffix '-ing' (Old English '-ung'), describing the ongoing action of using getters to purify systems.
This process, invisible to most people, happens inside light bulbs, vacuum tubes, and precision instruments—it's one of those technical innovations that enabled entire technologies to exist.
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