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Webster’s Dictionary (1828)



2,072 words match “RAD”

ALCOHOL n.
inic alcohol in constitution. Chemically speaking, they are hydroxides of certain organic radicals; as, the radical ethyl forms common or ethyl alcohol (C2H5OH); methyl forms methyl alcohol (CH3.OH) or wood spirit; amyl forms amyl alcohol (C5H11.OH) or fusel oil, etc.
ALCOHOLOMETER; ALCOHOLMETER n.
An instrument for determining the strength of spirits, with a scale graduated so as to indicate the percentage of pure alcohol, either by weight or volume. It is usually a form of hydrometer with a special scale.
ALCORANIST n.
One who adheres to the letter of the Koran, rejecting all traditions.
ALIDADE n.
The portion of a graduated instrument, as a quadrant or astrolabe, carrying the sights or telescope, and showing the degrees cut off on the arc of the instrument Whewell.
ALIGNMENT n.
The ground-plan of a railway or other road, in distinction from the grades or profile.
ALKALAMIDE n.
ich a part of the hydrogen has been replaced by basic, and another part by acid, atoms or radicals.
ALLOXANATE n.
A combination of alloxanic acid and a base or base or positive radical.
ALLUVION n.
An accession of land gradually washed to the shore or bank by the flowing of water. See Accretion.
ALLYL n.
An organic radical, C3H5, existing especially in oils of garlic and mustard.
ALPHA RAYS n.
Rays of relatively low penetrating power emitted by radium and other radioactive substances, and shown to consist of positively charged particles (perhaps particles of helium) having enormous velocities but small masses. They are slightly deflected by a strong magnetic or electric field.
ALTERANT a.
Altering; gradually changing. Bacon.
ALTERATIVE a. 2 definitions
Gradually changing, or tending to change, a morbid state of the functions into one of health. Burton.
ALUMNA n.
A female pupil; especially, a graduate of a school or college.
ALUMNUS n.
A pupil; especially, a graduate of a college or other seminary of learning.
AMASS v.
fortune; to amass words or phrases. The life Homer has been written by amassing all the traditions and hints the writers could meet with. Pope.
AMBREATE n.
A salt formed by the combination of ambreic acid with a base or positive radical.
AMBULACRUM n.
One of the radical zones of echinoderms, along which run the principal nerves, blood vessels, and water tubes. These zones usually bear rows of locomotive suckers or tentacles, which protrude from regular pores. In star fishes they occupy the grooves along the under side of the rays.
AMIDE n.
A compound formed by the union of amidogen with an acid element or radical. It may also be regarded as ammonia in which one or more hydrogen atoms have been replaced by an acid atom or radical. Acid amide, a neutral compound formed by the substitution of the amido group for hydroxyl in an acid.
AMIDOGEN n.
A compound radical, NH2, not yet obtained in a separate state, which may be regarded as ammonia from the molecule of which one of its hydrogen atoms has been removed; -- called also the amido group, and in composition represented by the form amido.
AMINE n.
nces derived from ammonia by replacement of one or more hydrogen atoms by a basic atom or radical.
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