any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines
an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds
care by procedures or applications that are intended to relieve illness or injury
the management of someone or something; "the handling of prisoners"; "the treatment of water sewage"; "the right to equal treatment in the criminal justice system"
a manner of dealing with something artistically; "his treatment of space borrows from Italian architecture"
perceptible by the senses especially the sense of touch; "skin with a tangible roughness"
(of especially business assets) having physical substance and intrinsic monetary value ; "tangible property like real estate"; "tangible assets such as machinery"
(grammar) a word or phrase or clause forming part of a larger grammatical construction
a member of a constituency; a citizen who is represented in a government by officials for whom he or she votes; "needs continued support by constituents to be re-elected"