ponderable

Yet I must first make a brave face, no doubt, and present in its native humility my scant but quite ponderable germ.

Air is ponderable matter—as much so as lead—and equally requires force of some kind to set it or keep it in motion.

They are not easily ponderable and measurable—even less so than those of other disciplines.

We shall confine ourselves here to a few remarks on the more important questions which concern the nature of ponderable matter.

But there would be just as much reason to deny the existence of ponderable matter.