noun

conditioner

conditioner, air conditioner

I use shampoo and then conditioner.

I use shampoo and then conditioner.

The air conditioner keeps the room cool.

The air conditioner keeps the room cool.

((hair conditioner)) a substance for hair I use shampoo and then conditioner.

((air conditioner)) a machine for cooling air The air conditioner keeps the room cool.

Synonyms: (hair) rinse, treatment; (air) AC unit

From the verb 'to condition' (to bring something into a desired state) + the agent suffix '-er'. So, it's a thing that conditions.

A conditioner is something that improves the 'condition' of something else, like your hair or the air.

This page is designed for learning support. Please use it as a learning reference, not as a formal reference.