Search the Dictionary

(. (Chem.) A prefix (also used adjectively) designating the group or radical NO, called the nitroso group, or its compounds.

the radical NO, called also the nitroso group. The term is sometimes loosely used to designate certain nitro compounds; as, nitrosyl sulphuric acid. Used also adjectively.

A name sometimes given to the nitro group or radical.

titute of acid properties; hence, basic; metallic; positive; -- said of certain atoms and radicals.

The hydrocarbon radical, C9H19, derived from nonane and forming many compounds. Used also adjectively; as, nonyl alcohol.

An atom or radical which has a valence of eight, or is octavalent.

th, exchanged for, or compared with, eight atoms of hydrogen; -- said of certain atoms or radicals.

A hypothetical radical (C8H15O), regarded as the essential residue of octoic acid.

A hypothetical hydrocarbon radical regarded as an essential residue of octane, and as entering into its derivatives; as, octyl alcohol.

A hydrocarbon radical formerly supposed to exist in oenanthic acid, now known to be identical with heptyl.

A hydrocarbon radical (C2O2) regarded as a residue of oxalic acid and occurring in derivatives of it.

A binary compound of oxygen with an atom or radical, or a compound which is regarded as binary; as, iron oxide, ethyl oxide, nitrogen oxide, etc.

etc.; also, an isomeric modification. (b) Specifically: (Organ. Chem.) That two groups or radicals substituted in the benzene nucleus are opposite, or in the respective positions 1 and 4; 2 and 5; or 3 and 6, as paraxylene; paroxybenzoic acid. Cf. Ortho-, and Meta-. Also used adjectively.

Having the same derivation; allied radically; conjugate; -- said of certain words, as man, mankind, manhood, etc.

les of a monacid base; having five acid hydrogen atoms capable of substitution by a basic radical; -- said of certain acids.

Any element, atom, or radical, having a valence of five, or which can be combined with, substituted for, or compared with, five atoms of hydrogen or other monad; as, nitrogen is a pentad in the ammonium compounds.

Having a valence of five; -- said of certain atoms and radicals.

The hypothetical radical, C5H11, of pentane and certain of its derivatives. Same as Amyl.

Odd; not even; -- said of elementary substances and of radicals whose valence is not divisible by two without a remainder. Contrasted with artiad.

A hydrocarbon radical (C6H5) regarded as the essential residue of benzene, and the basis of an immense number of aromatic derivatives. Phenyl hydrate (Chem.), phenol or carbolic acid. -- Phenyl hydrazine (Chem.), a nitrogenous base (C6H5.N2H3) produced artificially as a colorless oil which unites with acids, ketones,…