aloeaceae: one of many families or subfamilies into which some classification systems subdivide the Liliaceae but not widely accepted
liliid monocot family: family of monocotyledonous plants of the subclass Liliidae; mostly herbs usually with petaloid sepals and petals and compound pistils
principle of relativity: (physics) a universal law that states that the laws of mechanics are not affected by a uniform rectilinear motion of the system of coordinates to which they are referred