earth (redirected from come back down to earth)

earth (ûrth)

n.

Any of several metallic oxides, such as alumina or zirconia, from which it is difficult to remove oxygen. No longer in technical use.

---

earth,

n one of the five phases, or elements, in Chinese cosmological and medical theory, whose characteristic manifestations include caring, nourishment, stability, support, and familial loyalty.

---

earth

1. soil; softer part of the land, as distinct from rock.

2. metallic oxides in the form of unchangeable powder.

---

diatomaceous earth

a fine white powder composed of the siliceous skeletons of diatoms; used in treating diarrhea and as a feed additive. Called also infusorial earth, purified siliceous earth.

infusorial earth

see diatomaceous earth (above).

siliceous earth

see diatomaceous earth (above).