Equilibrium price

Japanese: 均衡価格 - きんこうかかく

… Now, when a certain price vector is given in the market, if the demand for a certain good exceeds the supply, the price of that good will rise, and if it falls, the price will fall. It is believed that trading will only take place at the point where demand and supply match. The price that brings about this match between supply and demand is the equilibrium price, and the values of the demand function and supply function at that time determine the equilibrium consumption and equilibrium production. As long as there are no changes in external conditions, this state will be maintained, and the basic idea of equilibrium theory is that resource allocation is determined in this way. …

[Price]

The relationship between the price of a product and its sales volume is the product supply function of a firm, and the relationship between the price of a production factor and the amount purchased is the factor demand function of a firm.
[Equilibrium Price System]
Next, we will look at the market in which these households and companies buy and sell products and production factors. The sum of the demand (supply) functions of individual households or companies for society as a whole is called the market demand (supply) function.

From [Period Analysis]

...The above process is repeated for new interim prices. This process is repeated until an interim price (equilibrium price) is reached where the sum of the planned supply and demand of companies and households is equal for all goods. However, it is assumed that the equilibrium price is reached instantly, and that throughout each period, companies and households continue to produce and consume in accordance with their demand and supply plans that correspond to the equilibrium price. ...

From [Market Equilibrium]

…In such a case, the price will continue to fluctuate until supply and demand are equal, and transactions will take place at the price at which they are equal. The price at that time is called the equilibrium price, and the supply and demand quantity is called the equilibrium trading quantity (equilibrium consumption quantity = equilibrium production quantity). This state is thought to be maintained unless external conditions change. …

*Some glossaries that mention "equilibrium price" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…　さて市場においてある価格ベクトルが与えられたとき，ある財の需要量が供給量を上まわればその財の価格は上昇し，下まわれば下落し，需要と供給が一致する点において初めて取引が行われると考えられる。この需給一致をもたらす価格が均衡価格であり，そのときの需要関数，供給関数の値が均衡消費量と均衡生産量とを定める。外的条件に変化がないかぎり，その状態が維持され，そのように資源配分が決定されるというのが均衡理論の基本的思想である。…

【価格】より

…生産物の価格とその販売量との関係が企業の生産物供給関数であり，生産要素の価格と購入量との関係が企業の生産要素需要関数である(生産要素のなかには，家計の所有する生産要素のほかに，企業間で売買される生産要素，つまり中間生産物があるが，ここでは，叙述の簡単化のため，これを無視する)。
［均衡価格体系］
　次に，これらの家計と企業が生産物と生産要素を売買する市場をみることにする。個々の家計あるいは企業の需要(供給)関数を社会全体について合計したものは市場需要(供給)関数と呼ばれる。…

【期間分析】より

…新たな暫定価格についても以上のことが繰り返される。企業，家計の計画供給量と需要量の合計がすべての財について一致するような暫定価格(均衡価格)に到達するまで，この過程は繰り返される。　しかしながら，均衡価格は瞬時にして到達すると仮定され，各期の期間中続けて，企業，家計は均衡価格に対応する需要･供給計画にのっとって生産，消費活動をすると仮定される。…