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v. de·cid·ed, de·cid·ing, de·cides
a. To reach a conclusion or form a judgment or opinion about (something) by reasoning or consideration: decide what to do.
b. To cause to make or reach a decision: "The presence of so many witnesses decided him at once to flee" (Robert Louis Stevenson).
2. To settle conclusively all contention or uncertainty about: decide a case; decided the dispute in favor of the workers.
3. To influence or determine the outcome of: A few votes decided the election.
1. To pronounce a judgment; announce a verdict.
2. To reach a decision; make up one's mind.

[Middle English deciden, from Old French decider, from Latin dēcīdere, to cut off, decide : dē-, de- + caedere, to cut; see kaə-id- in Indo-European roots.]

de·cid·a·bil′i·ty n.
de·cid′a·ble adj.
de·cid′er n.
Synonyms: decide, determine, settle, rule, conclude, resolve
These verbs mean to come to a decision about. Decide has the broadest range: The judge will decide the case on its merits. We decided to postpone our vacation for a week.
Determine has a similar range but often involves somewhat narrower issues: The doctor determined the cause of the infection. The jury will determine the fate of the defendant.
Settle stresses finality of decision: "The lama waved a hand to show that the matter was finally settled in his mind" (Rudyard Kipling).
Rule implies that the decision is handed down by someone in authority: The committee ruled that changes in the curriculum should be implemented.
Conclude suggests that a decision, opinion, or judgment has been arrived at after careful consideration: She concluded that the criticism was unjust.
Resolve stresses the exercise of choice in making a firm decision: I resolved to lose weight.


1. the capability of being decided
2. logic the capability of being proven as having or not having a particular quality
References in periodicals archive ?
Objective: Finite automata are fundamental objects in Computer Science, of great importance on one hand for theoretical aspects (formal language theory, decidability, complexity) and on the other for practical applications (parsing).
Performance evaluation was done with decidability, EER, DET (Detection Error Trade-off) curve shown better performance than other methods.
Double-Crossing: Decidability and Computational Complexity of a Qualitative Calculus for Navigation.
Stu87] Bernd Sturmfels, On the decidability of Diophantine problems in combinatorial geometry, Bull.
At the beginning of this paper, we said that decidability, set-oriented operations, and homomorphism were the three essential features of data models.
Post and the development of logic, John von Neuman and the ideas of David Hilbert, the contribution of Polish logicians to decidability theory and predicate calculus, and the development of symbolism in logic and its philosophical background.