spissitude noun2 •Density, thickness; the state or quality of being inspissated or thickened.The cause is, for that it is over-moistened, and wanteth spissitude: and we have a merry saying, that they that go drunk to bed get daughters. — 1803 •Spiritual substance or density, viewed as the fourth dimension of an object.The first concerns the peculiar attribute of spirit, its spissitude or spiritual density that fourth dimension which augments or diminishes as the spirit contracts or expands. — 2012 formsspissitudes