Topic Navigator

Noun Tree | Nouns Groups | Verb Groups | Search

Parent Categories

entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

matter go
that which has mass and occupies space

substance go
the real physical matter of which a person or thing consists

material, stuff go
the tangible substance that goes into the makeup of a physical object

chemical, chemical substance go
material produced by or used in a reaction involving changes in atoms or molecules

compound, chemical compound go
(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

oxide
any compound of oxygen with another element or a radical

noun.substance

17 Subcategories

titanium dioxide, titanium oxide, titanic oxide, titania go
a white powder used as a pigment for its high covering power and durability
pentoxide go
an oxide containing five atoms of oxygen in the molecule
nitrogen oxide go
any of several oxides of nitrogen formed by the action of nitric acid on oxidizable materials
lime, calcium oxide, quicklime, calx, calcined lime, fluxing lime, unslaked lime, burnt lime go
a white crystalline oxide used in the production of calcium hydroxide
copper oxide go
an oxide of copper
dioxide go
an oxide containing two atoms of oxygen in the molecule
ferric oxide go
a red oxide of iron
monoxide go
an oxide containing just one atom of oxygen in the molecule
peroxide go
an inorganic compound containing the divalent ion -O-O-
red lead, minium go
a reddish oxide of lead (Pb3O4) used as a pigment in paints and in glass and ceramics
silica, silicon oxide, silicon dioxide go
a white or colorless vitreous insoluble solid (SiO2)
sulfur oxide, sulphur oxide go
any of several oxides of sulphur
superoxide go
a metallic oxide containing the univalent anion O2-
tetroxide go
an oxide containing four atoms of oxygen in the molecule
trioxide go
an oxide containing three atoms of oxygen in the molecule
zinc oxide, flowers of zinc, philosopher's wool, philosophers' wool go
oxide of zinc
zirconium oxide, zirconia, zirconium dioxide go
a white crystalline oxide