The quality or state of being fruitful, productive, or rich in beneficial results.
From fructuose (or fructuous) combined with -ity, forming an abstract noun. Traces back to Latin fructus (fruit) through fructuosus.
Fructuosity measures the property of being productive—it's an abstract noun for productivity itself. Medieval scholars debated which activities had greater fructuosity: manual labor, prayer, intellectual work, or charity. The word shows how they quantified and compared different kinds of human effort.
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