: something that conditions
specifically : a preparation used to improve the condition of hair

Examples of conditioner in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Use a hydrating leave-in conditioner to keep your natural curls healthy. Audrey Noble, InStyle, 2 July 2026 The pair met in Brussels just as a historic heat wave has Europeans rushing to buy air conditioners — mostly made in China. Anniek Bao,evelyn Cheng, CNBC, 2 July 2026 As Americans crank up their air conditioners, the country’s largest grid operator forecast that electricity demand could break records, raising the risk of blackouts. J.d. Capelouto, semafor.com, 2 July 2026 But if ventilation is blocked or poor, hot air becomes trapped beneath the roof, increasing attic temperatures and forcing the air conditioner to work harder to keep the entire home comfortable. Kamron Sanders, The Spruce, 3 July 2026 See All Example Sentences for conditioner

Word History

First Known Use

1888, in the meaning defined above

Time Traveler
The first known use of conditioner was in 1888

Browse Nearby Words

Cite this Entry

“Conditioner.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/conditioner. Accessed 8 Jul. 2026.

Kids Definition

conditioner

noun
: something that conditions
especially : a preparation used to improve the condition of hair

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