Having large rooms with few dividing barriers such as partitions(adjective)
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Use "open-plan" in a sentence
"In America, we’ve seen more and more so-called open-plan kitchens—kitchens that blend seamlessly into dens or other sprawling rooms."
"At the opposite end of the Usine gallery is the couple's private headquarters, with two small bedrooms "If it were up to me, I'd live in a completely empty, white bedroom!" says the artist, an open-plan kitchen with a counter of 20-centimeter-thick steel, shiny stainless steel floors and a living room/office chockablock with prized pieces by Mr. Venet's wide circle of artist friends from the Minimalist and New Realist schools."
"We always tell readers to look for properties with open-plan kitchen and dining areas or big patios where everyone can gather and cook, eat, and visit."