low-fiber

The compound adjective "low-fiber" is a modern nutritional and metaphorical term built from two ancient roots. "Low" originates from Proto-Germanic terms related to lying flat or being humble, evolving to describe something deficient in quantity or quality. "Fiber" traces back to the Latin 'fibra', meaning a filament or strand, likely from the Proto-Indo-European root dʰeh₁- meaning "to suck, suckle," with an extended sense of something drawn out. Combined in the mid-20th century, the term first literally describes food deficient in indigestible plant material. Its figurative sense, implying a lack of substance or complexity, logically extends from the literal meaning, drawing on the conceptual link between physical bulk and intellectual or substantive depth.

Structure: low (small in amount/degree) + fiber (thread-like substance) - low: From Old English 'hlāw', 'hlǣw' (hill, mound), later influenced by Old Norse 'lágr' (low in position). In this compound, it functions as an adjective meaning "small in amount or degree." - fiber: From Latin 'fibra' (filament, entrail). In this compound, it functions as a noun referring to the thread-like substance forming plant tissues or dietary material.