Order of a differential equation
(gcide) | Order \Or"der\, n. [OE. ordre, F. ordre, fr. L. ordo, ordinis.
Cf. Ordain, Ordinal.]
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1. Regular arrangement; any methodical or established
succession or harmonious relation; method; system; as:
(a) Of material things, like the books in a library.
(b) Of intellectual notions or ideas, like the topics of a
discource.
(c) Of periods of time or occurrences, and the like.
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The side chambers were . . . thirty in order.
--Ezek. xli.
6.
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Bright-harnessed angels sit in order
serviceable. --Milton.
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Good order is the foundation of all good things.
--Burke.
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2. Right arrangement; a normal, correct, or fit condition;
as, the house is in order; the machinery is out of order.
--Locke.
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3. The customary mode of procedure; established system, as in
the conduct of debates or the transaction of business;
usage; custom; fashion. --Dantiel.
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And, pregnant with his grander thought,
Brought the old order into doubt. --Emerson.
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4. Conformity with law or decorum; freedom from disturbance;
general tranquillity; public quiet; as, to preserve order
in a community or an assembly.
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5. That which prescribes a method of procedure; a rule or
regulation made by competent authority; as, the rules and
orders of the senate.
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The church hath authority to establish that for an
order at one time which at another time it may
abolish. --Hooker.
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6. A command; a mandate; a precept; a direction.
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Upon this new fright, an order was made by both
houses for disarming all the papists in England.
--Clarendon.
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7. Hence: A commission to purchase, sell, or supply goods; a
direction, in writing, to pay money, to furnish supplies,
to admit to a building, a place of entertainment, or the
like; as, orders for blankets are large.
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In those days were pit orders -- beshrew the
uncomfortable manager who abolished them. --Lamb.
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8. A number of things or persons arranged in a fixed or
suitable place, or relative position; a rank; a row; a
grade; especially, a rank or class in society; a group or
division of men in the same social or other position;
also, a distinct character, kind, or sort; as, the higher
or lower orders of society; talent of a high order.
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They are in equal order to their several ends.
--Jer. Taylor.
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Various orders various ensigns bear. --Granville.
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Which, to his order of mind, must have seemed little
short of crime. --Hawthorne.
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9. A body of persons having some common honorary distinction
or rule of obligation; esp., a body of religious persons
or aggregate of convents living under a common rule; as,
the Order of the Bath; the Franciscan order.
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Find a barefoot brother out,
One of our order, to associate me. --Shak.
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The venerable order of the Knights Templars. --Sir
W. Scott.
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10. An ecclesiastical grade or rank, as of deacon, priest, or
bishop; the office of the Christian ministry; -- often
used in the plural; as, to take orders, or to take holy
orders, that is, to enter some grade of the ministry.
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11. (Arch.) The disposition of a column and its component
parts, and of the entablature resting upon it, in
classical architecture; hence (as the column and
entablature are the characteristic features of classical
architecture) a style or manner of architectural
designing.
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Note: The Greeks used three different orders, easy to
distinguish, Doric, Ionic, and Corinthian. The Romans
added the Tuscan, and changed the Doric so that it is
hardly recognizable, and also used a modified
Corinthian called Composite. The Renaissance writers on
architecture recognized five orders as orthodox or
classical, -- Doric (the Roman sort), Ionic, Tuscan,
Corinthian, and Composite. See Illust. of Capital.
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12. (Nat. Hist.) An assemblage of genera having certain
important characters in common; as, the Carnivora and
Insectivora are orders of Mammalia.
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Note: The Linnaean artificial orders of plants rested mainly
on identity in the numer of pistils, or agreement in
some one character. Natural orders are groups of genera
agreeing in the fundamental plan of their flowers and
fruit. A natural order is usually (in botany)
equivalent to a family, and may include several tribes.
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13. (Rhet.) The placing of words and members in a sentence in
such a manner as to contribute to force and beauty or
clearness of expression.
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14. (Math.) Rank; degree; thus, the order of a curve or
surface is the same as the degree of its equation.
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Artificial order or Artificial system. See {Artificial
classification}, under Artificial, and Note to def. 12
above.
Close order (Mil.), the arrangement of the ranks with a
distance of about half a pace between them; with a
distance of about three yards the ranks are in {open
order}.
The four Orders, The Orders four, the four orders of
mendicant friars. See Friar. --Chaucer.
General orders (Mil.), orders issued which concern the
whole command, or the troops generally, in distinction
from special orders.
Holy orders.
(a) (Eccl.) The different grades of the Christian
ministry; ordination to the ministry. See def. 10
above.
(b) (R. C. Ch.) A sacrament for the purpose of conferring
a special grace on those ordained.
In order to, for the purpose of; to the end; as means to.
The best knowledge is that which is of greatest use
in order to our eternal happiness. --Tillotson.
Minor orders (R. C. Ch.), orders beneath the diaconate in
sacramental dignity, as acolyte, exorcist, reader,
doorkeeper.
Money order. See under Money.
Natural order. (Bot.) See def. 12, Note.
Order book.
(a) A merchant's book in which orders are entered.
(b) (Mil.) A book kept at headquarters, in which all
orders are recorded for the information of officers
and men.
(c) A book in the House of Commons in which proposed
orders must be entered. [Eng.]
Order in Council, a royal order issued with and by the
advice of the Privy Council. [Great Britain]
Order of battle (Mil.), the particular disposition given to
the troops of an army on the field of battle.
Order of the day, in legislative bodies, the special
business appointed for a specified day.
Order of a differential equation (Math.), the greatest
index of differentiation in the equation.
Sailing orders (Naut.), the final instructions given to the
commander of a ship of war before a cruise.
Sealed orders, orders sealed, and not to be opened until a
certain time, or arrival at a certain place, as after a
ship is at sea.
Standing order.
(a) A continuing regulation for the conduct of
parliamentary business.
(b) (Mil.) An order not subject to change by an officer
temporarily in command.
To give order, to give command or directions. --Shak.
To take order for, to take charge of; to make arrangements
concerning.
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Whiles I take order for mine own affairs. --Shak.
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Syn: Arrangement; management. See Direction.
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