- 一次の

- 関
- primary

- of first rank or importance or value; direct and immediate rather than secondary; "primary goals"; "a primary effect"; "primary sources"; "a primary interest"
- a preliminary election where delegates or nominees are chosen (同)primary_election
- one of the main flight feathers projecting along the outer edge of a bird
*s wing (同)primary feather, primary quill* - (astronomy) a celestial body (especially a star) relative to other objects in orbit around it
- not derived from or reducible to something else; basic; "a primary instinct"
- a partial correlation in which the effects of only one variable are removed (held constant)
- make a request for something; "Order me some flowers"; "order a work stoppage"
- bring order to or into; "Order these files"
- established customary state (especially of society); "order ruled in the streets"; "law and order"
- place in a certain order; "order the photos chronologically"
- a degree in a continuum of size or quantity; "it was on the order of a mile"; "an explosion of a low order of magnitude" (同)order_of_magnitude
- the act of putting things in a sequential arrangement; "there were mistakes in the ordering of items on the list" (同)ordering
- (architecture) one of original three styles of Greek architecture distinguished by the type of column and entablature used or a style developed from the original three by the Romans
- a group of person living under a religious rule; "the order of Saint Benedict" (同)monastic order
- a commercial document used to request someone to supply something in return for payment and providing specifications and quantities; "IBM received an order for a hundred computers" (同)purchase order
- a body of rules followed by an assembly (同)rules of order, parliamentary law, parliamentary procedure
- (biology) taxonomic group containing one or more families
- (often plural) a command given by a superior (e.g., a military or law enforcement officer) that must be obeyed; "the British ships dropped anchor and waited for orders from London"
- a request for something to be made, supplied, or served; "I gave the waiter my order"; "the company
*s products were in such demand that they got more orders than their call center could handle"* - issue commands or orders for (同)prescribe, dictate
- give instructions to or direct somebody to do something with authority; "I said to him to go home"; "She ordered him to do the shopping"; "The mother told the child to get dressed" (同)tell, enjoin, say
- preceding all others in time or space or degree; "the first house on the right"; "the first day of spring"; "his first political race"; "her first baby"; "the first time"; "the first meetings of the new party"; "the first phase of his training"
- the first or highest in an ordering or series; "He wanted to be the first" (同)number_one
- the first element in a countable series; "the first of the month" (同)number_one, number 1
- an honours degree of the highest class (同)first-class honours degree
- indicating the beginning unit in a series (同)1st
- before anything else; "first we must consider the garter snake" (同)firstly, foremost, first of all, first off
- the initial time; "when Felix first saw a garter snake" (同)for_the_first_time
- ranking above all others; "was first in her class"; "the foremost figure among marine artists"; "the top graduate" (同)foremost, world-class
- before another in time, space, or importance; "I was here first"; "let
*s do this job first"* - highest in pitch or chief among parts or voices or instruments or orchestra sections; "first soprano"; "the first violin section"; "played first horn"
- any of various evergreen trees of the genus Abies; chiefly of upland areas (同)fir_tree, true fir
- nonresinous wood of a fir tree
- having a systematic arrangement; especially having elements succeeding in order according to rule; "an ordered sequence"
- logical or comprehensible arrangement of separate elements; "we shall consider these questions in the inverse order of their presentation" (同)order, ordination

- 『第一の』,『主要な』 / 『初期の』,『初等の』,初級の / 『根本的な』,基本的な,本来の,直接的な / 《名詞の前にのみ用いて》(回路・コイル・巻き・電流などが)一次の / 原色(三原色の一つ) / 《米》=primary election
- 〈C〉《しばしば複数形で》『命令』,指図,指令 / 〈U〉(物事の)『順序』,順番 / 〈U〉(自然界の)『秣序』 / 〈U〉(社会の)治安,秣序 / 〈U〉整頓(せいとん)された状態,きちんとしていること《good,badなどを伴って》(一般に物事の)調子, 状態 / 〈U〉(商品などの)『注文』《+『for』+『名』》 / 〈C〉調文品 / 〈C〉(レストランなどでの料理の)一盛り / 〈C〉種類,等級,品資(kind, sort) / 〈C〉(動植物分類の)目(もく) / 〈C〉聖職者の階級;《複数形で》聖職 / 〈C〉《しばしばO-》教団,教派;(ある特殊な)社会 / 〈C〉《しばしばO-》勲位,勲章 / 〈C〉(古代ギリシャの)建築様式,柱式 / …‘を'『命令する』,指図する;〈人〉‘に'命令する / 《方向を表す副詞[句]を伴って》〈人〉‘に'行くように命じる / 〈商品など〉‘を'『注文する』;…‘を'あつらえる / …‘を'整頓(せいとん)する,きちんとする / 命令する;注文する
- (順序・時間的に)『第1の』,1番目の;最初の / (階級・等級・重要度などが)『1番の』,第一級の,首席の,最も重要な / 『最初に』,まっ先に;1番目に,第1位に;初めて / (…するくらいなら)むしろ,いっそ(…のほうがいい)(rather, sooner) / 《通例the~》『最初のもの』;(月の)第1日;(時代の)第1年 / 《通例the~》初め,始まり / 〈U〉ファーストギヤ,低速ギヤ / 〈C〉《英》(競技などの)第1位,1等(試験の)第一級 / 《複数形で》最高級品,一級品 / 〈U〉=first base
- モミ,モミの木(クリスマスツリーに用いられる) / モミ材
- 整然とした,規則正しい

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/12/03 10:19:39」(JST)

Look up in Wiktionary, the free dictionary.first-order |

In mathematics and other formal sciences, **first-order** or **first order** most often means either:

- "linear" (a polynomial of degree at most one), as in first-order approximation and other calculus uses, where it is contrasted with "polynomials of higher degree", or
- "without self-reference", as in first-order logic and other logic uses, where it is contrasted with "allowing some self-reference" (higher-order logic)

In detail, it may refer to:

- 1 Mathematics
- 1.1 Differential equations
- 1.2 Logic

- 2 Chemistry
- 3 Computer science
- 4 Other uses

- First-order approximation
- First-order arithmetic
- First order condition
- First-order control, when a desired result is attempted by adjusting a scalar (first-order) control
- First-order hold, a mathematical model of the practical reconstruction of sampled signals
- First-order inclusion probability
- First Order Inductive Learner, a rule-based learning algorithm
- First-order reduction, a very weak type of reduction between two computational problems
- First-order resolution
- First-order stochastic dominance

- Exact first-order ordinary differential equation
- First-order differential equation
- First-order differential operator
- First order linear differential equation
- First-order non-singular perturbation theory
- First-order partial differential equation, a partial differential equation that involves only first derivatives of the unknown function of
*n*variables - Order of accuracy

- First-order language
- First-order logic, a formal logical system used in mathematics, philosophy, linguistics, and computer science
- First-order predicate, a predicate that takes only individual(s) constants or variables as argument(s)
- First-order predicate calculus
- First-order theorem provers
- First-order theory
- Monadic first-order logic

- First-order fluid, another name for a power-law fluid with exponential dependence of viscosity on temperature
- First-order reaction (disambiguation)
- First-order transition

- First-order abstract syntax
- First-order function
- First-order query

- First-order desire
- First-order election, in political science, the relative importance of certain elections
- First order Fresnel lens
**First-order stream**in Strahler stream order

This disambiguation page lists articles associated with the title First-order.If an internal link led you here, you may wish to change the link to point directly to the intended article. |

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リンク元 | 「primary」「一次」 |

関連記事 | 「order」「first」 |

- adj.

- 一次の、第一次の、主要な、(化学)第一級の、一級の、初生の、(病名)原発性の、原発の、プライマリーの

- n.

- (生物)目

- of the order of ～: ほぼ～程度の

- Body stores are of the order of 2-4mg, sufficient for 3-4 years if supplies are completely cut off.