- In plates - Thin plate - A thin plate or scale; a layer or coat lying over another;
-- said of thin plates or platelike substances, as of bone or minerals. - The blade of a leaf; the broad, expanded portion of a petal
or sepal of a flower. - A thin plate or scale; specif., one of the thin, flat
processes composing the vane of a feather.
- A leaf, esp. a thin leaf or plate. - A curve of the third order, consisting of two infinite
branches, which have a common asymptote. The curve has a double point,
and a leaf-shaped loop; whence the name. Its equation is x3 + y3 = axy.