integrator comes from integrate + -or; integrate derives from Latin integratus, past participle of integrare ('to make whole, renew'), from integer ('whole'). Morphologically, the ending is part of the etymology: the suffix is attached to the older base named in the history, producing a later English derivative. In present English, the noun sense is "a person or device that combines separate parts into a unified whole", so the historical development ends in a clearly identifiable modern dictionary use. The same base also appears in related forms such as integrate, integration, integral, and integrity. Its semantic neighborhood includes unifier, coordinator, combiner, and synthesizer, which helps locate the modern sense without adding a separate etymological claim. The named historical forms include Latin integrare and Latin integer.