undercoat

• Nom aux plusieurs sens : revêtement protecteur appliqué sous une voiture pour prévenir la rouille ; couche de peinture préparatoire posée avant la couche définitive ; ou couche de poils dense et doux sous les poils de couverture plus longs d'un animal.

A noun with multiple meanings: a protective coating applied to the underside of a vehicle to prevent rust; a preliminary layer of paint applied to a surface before the main coat; or the dense, soft layer of fur beneath an animal's longer guard hairs.

1. Vehicle protective coatingB2formaltechnical

   A layer of tar or rubber-like material applied to the underside of a motor vehicle to prevent rust and corrosion.

   Sous-couche anticorrosion

   • The mechanic recommended applying an undercoat to protect the car from winter salt.
   • The truck's undercoat had worn away after years of driving on gravel roads.
   • A fresh undercoat can significantly extend the life of a vehicle's chassis.

   Synonymesunderseal

2. Base paint layerB1formaltechnical

   The first layer of paint or primer applied to a surface before the final coat.

   Sous-couche de peinture

   • You need to apply an undercoat before painting the walls for a smooth finish.
   • The painter used a white undercoat to make the blue topcoat more vibrant.
   • Sanding the undercoat helps the final paint adhere better.

   Synonymesgroundprimer

   Antonymesfinishovercoattopcoat

3. Animal fur layerB2formalscientific

   The dense, soft layer of fur beneath the longer and coarser guard hairs of an animal, providing insulation.

   sous-poil

   • The dog's thick undercoat keeps it warm during the winter months.
   • Siberian huskies have a dense undercoat that sheds heavily in spring.
   • Brushing the undercoat helps reduce shedding and keeps the animal comfortable.

   Synonymesdownunderfur

• Verbe signifiant appliquer une couche de base ou une sous-couche de peinture ou de revêtement avant la finition.

A verb meaning to apply a preparatory layer of paint or coating beneath the final finish.

1. Apply a primerB2formal

   To cover a surface with a preparatory layer of paint or sealant before applying the final coat.

   appliquer une couche d'apprêt

   • Before painting the wall, you should undercoat it to ensure better adhesion.
   • The carpenter undercoated the wooden frame to protect it from moisture.
   • Make sure to undercoat the metal surface to prevent rust.

   Synonymesgroundprimesealsize