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• Nom désignant une personne autorisée à agir au nom d'une autre, ou un symbole dans une expression logique ou mathématique pouvant être remplacé par n'importe quel élément d'un ensemble donné.

A noun referring to a person authorized to act on behalf of another, or a symbol in a logical or mathematical expression that can be replaced by any member of a specified set.

1. Person acting on behalf of anotherB2formal

   An individual who is authorized to act or make decisions for someone else, often in a temporary capacity.

   Personne agissant pour le compte d'autrui

   • The CEO appointed a placeholder to attend the conference in her absence.
   • During the trial, a placeholder was used to represent the absent witness.
   • He served as a placeholder for the manager until a permanent replacement was found.

   Synonymesagentalternatedeputylocum tenensproxyrepresentativestand-insubstitutesurrogateunderstudy

2. Symbol in logic or mathematicsC1formalscientific

   A symbol, such as a variable, used in a logical or mathematical expression that can be replaced by any element from a specified set.

   Symbole en logique ou mathématiques

   • In algebra, 'x' is often used as a placeholder for an unknown number.
   • The logical expression uses a placeholder to represent any possible value.
   • Mathematicians use placeholders to simplify complex equations.

   Synonymesvariable