Word Meanings - PERIODICPERIODICAL - Book Publishers vocabulary database

Of or pertaining to a period; constituting a complete sentence. Periodic comet (Astron.), a comet that moves about the sun in an elliptic orbit; a comet that has been seen at two of its approaches to the sun. -- Periodic function (Math.), a function whose values recur at fixed intervals as the variable uniformly increases. The trigonomertic functions, as sin x, tan x, etc., are periodic functions. Exponential functions are also periodic, having an imaginary period, and the elliptic functions have not only a real but an imaginary period, and are hence called doubly periodic. -- Periodic law (Chem.), the generalization that the properties of the chemical elements are periodic functions of their atomic wieghts. "In other words, if the elements are grouped in the order of their atomic weights, it will be found that nearly the same properties recur periodically throughout the entire series." The following tabular arrangement of the atomic weights shows the regular recurrence of groups (under I., II., III., IV., etc.), each consisting of members of the same natural family. The gaps in the table indicate the probable existence of unknown elements. TABLE OF THE PERIODIC LAW OF THE CHEMICAL ELEMENTS (The vertical columns contain the periodic groups) Series1{ 2{ 3{ 4{ 5{ 6{ 7{ 8{ 9{

Follower
One who follows; a pursuer; an attendant; a disciple; a dependent associate; a retainer.
Unknown
Not known; not apprehended.
Recurvirostral
Having the beak bent upwards.
Underhangman
An assistant or deputy hangman.
Atomicity
Degree of atomic attraction; equivalence; valence; also (a later use) the number of atoms in an elementary molecule. See Valence.
Foundry
The act, process, or art of casting metals.
ENTIREWHEAT
Designating, made of, or relating to, flour including a considerable part of the bran.
Tableaux
of Tableau
Underleaf
A prolific sort of apple, good for cider.
Calliope
The Muse that presides over eloquence and heroic poetry; mother of Orpheus, and chief of the nine Muses.
Having
of Have
TABLELAND
A broad, level, elevated area of land; a plateau. The toppling crags of Duty scaled, Are close upon the shining table- lands To which our God himself is moon and sun. Tennyson.
Tablet
A small table or flat surface.
Undermine
To excavate the earth beneath, or the part of, especially for the purpose of causing to fall or be overthrown; to form a mine under; to sap; as, to undermine a wall.
Callous
Hardened; indurated.
Henceforward
From this time forward; henceforth.
Under-arm
Done (as bowling) with the arm not raised above the elbow, that is, not swung far out from the body; underhand. Cf. Over-arm and Round-Arm.
Underpeer
To peer under.
Completed
of Complete
Nearly
In a near manner; not remotely; closely; intimately; almost.

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Word Meanings - PERIODICPERIODICAL - Book Publishers vocabulary database

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