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  • plein air
    plein air
    noun
    the open air, especially the daylight of outdoors.
  • plein-air
    plein-air
    adjective
    pertaining to a manner or style of painting developed chiefly in France in the mid-19th century, characterized by the representation of the luminous effects of natural light and atmosphere as contrasted with the artificial light and absence of the sense of air or atmosphere associated with paintings produced in the studio.

plein air

1 American  
[pleyn air, ple ner] / ˈpleɪn ˈɛər, plɛ ˈnɛr /

noun

  1. the open air, especially the daylight of outdoors.

  2. Fine Arts. the quality of light and atmosphere out of doors, especially this quality as rendered in painting.


plein-air 2 American  
[pleyn-air, ple-ner] / ˌpleɪnˈɛər, plɛˈnɛr /

adjective

  1. pertaining to a manner or style of painting developed chiefly in France in the mid-19th century, characterized by the representation of the luminous effects of natural light and atmosphere as contrasted with the artificial light and absence of the sense of air or atmosphere associated with paintings produced in the studio.

  2. designating a painting executed out of doors and representing a direct response to the scene or subject in front of the artist.

  3. (of a painting) having the qualities of air and natural light.


plein-air British  
/ ˌpleɪnˈɛərɪst, plɛnɛr, ˌpleɪnˈɛə /

adjective

  1. of or in the manner of various French 19th-century schools of painting, esp impressionism, concerned with the observation of light and atmosphere effects outdoors

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of plein air1

1890–95; < French: literally, full air

Origin of plein-air2

First recorded in 1890–95; adj. use of plein air

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The result was 37 paintings begun from the motif en plein air, some worked on later in the studio at Giverny.

From The Wall Street Journal Oct. 11, 2025

“Music is art, dance is art, food is art,” she says, adding that she plans to feature comedy shows, dance and live music on future art hikes as well as plein air painting classes.

From Los Angeles Times Dec. 4, 2023

The invention of tubes of paint, as well as faster drying paint and collapsible easels, allowed artists to explore faster, more spontaneous ways of painting, often outdoors 'en plein air'.

From BBC May 23, 2023

“There’s snow on the ground. It was 25 degrees. And still the nurses were outside doing this, and I couldn’t even believe it. So I stood outside and plein air painted those drive-through test centers.”

From Seattle Times Jan. 17, 2022

Beowulf had knitted a carrying case with a strap, perfect for those times when one gets the urge to paint en plein air and needs to carry one’s portable easel, paints, and brushes outdoors.

From "The Long-Lost Home" by Maryrose Wood

Constable’s oil sketches, most unintended for public consumption, could be just as large and daring, and were prized for their extraordinarily loose paint-handling, transient atmospheric effects and true-to-nature palettes, the fruit of his plein-air practice.

From The Wall Street Journal Feb. 4, 2026

He’s made glad by the fact that she doesn’t know he’s a duke, and not an impoverished one, but, shown his plein-air painting, takes him for an artist.

From Los Angeles Times Nov. 7, 2023

Attending in 1949, Alex Katz studied plein-air painting and, a few years later, bought a house in Maine that has been inspiring some of his most celebrated work ever since.

From New York Times Jul. 6, 2022

Customers who purchase the coat on Cyber Monday will get to save $236 and can choose from the brand’s black, night sky and plein-air shades.

From Fox News Nov. 29, 2021

Wherever the eye turned, there was that luminous plein-air in the midst of which moved the figures of people working in the fields or near their cottages.

From Without Dogma by Sienkiewicz, Henryk

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