restrainer

• Substance chimique ajoutée à un révélateur photographique pour ralentir le développement et réduire le voile, ou personne qui dirige et contient les autres.

A noun referring to a chemical added to a photographic developer to slow development and reduce fog, or a person who directs and restrains others.

1. Photographic restrainerC1formaltechnical

   A chemical added to a photographic developer to slow down the development process and minimize fog on the film.

   Retardateur photographique

   • The photographer added a restrainer to the developer to control contrast.
   • Using too much restrainer can result in underexposed negatives.
   • Potassium bromide is a common restrainer used in black-and-white film development.

2. Person who controlsC1formal

   An individual who directs, controls, or holds back someone or something.

   personne qui contrôle ou retient

   • The teacher acted as a restrainer of the students' enthusiasm during the exam.
   • He was the restrainer of the group, ensuring everyone followed the rules.
   • The manager served as a restrainer, preventing the team from making hasty decisions.

   Synonymescontrollerdirectordisciplinariangovernorhandlermoderatoroverseerregulatorsupervisortamer