subduplicare
Could not find subduplico in Logeion dictionaries. Looking for closest alphabetic form.
si ‥ lux multiplicatione sui infinita extendit materiam in dimensionem bicubitam, eadem infinita multiplicatione duplicata extendit eam in dimensionem tetracubitam, et eadem ~ata extendit eam in dimensionem monocubitam