boundary

Glucosamine is a naturally occurring, sugar-related molecule that can cross the blood-brain barrier, the protective boundary that tightly controls which substances can move from the bloodstream into brain tissue.

From Science Daily ● Sep. 27, 2026

Among those opposing the plans is Emyr Davies, whose house lies not far from where the boundary of the site would be, should it be approved.

From BBC ● Sep. 22, 2026

Christopher: Several dealers I spoke with said they’re eager to shift the boundary of competition from absolute price to more subjective factors like customer service and a smooth sales experience.

From The Wall Street Journal ● Sep. 21, 2026

"Russia is gradually shifting the boundary for what they consider acceptable behaviour," he warned.

From Barron's ● Sep. 15, 2026

So they use parameter to mean a boundary, a characteristic, a component, an element, a feature, an ingredient, a part, a perimeter, a quality, or a requirement.

From "Woe Is I" by Patricia T. O'Conner

The groups can be "echo chambers where everyone just spins each other out about their kids", he says, and suggests having a proper conversation with your child about boundaries, before university starts.

From BBC ● Sep. 25, 2026

It’s OK to set boundaries with people, whether it’s a spouse, children, parents, friends or neighbors.

From MarketWatch ● Sep. 24, 2026

How do you negotiate professional boundaries with a 15-year-old?

From Salon ● Sep. 22, 2026

The Elcan case offers a look inside the complex strategies the ultrarich deploy to build intergenerational wealth and how those tactics can sometimes test the boundaries of tax rules.

From The Wall Street Journal ● Sep. 21, 2026

Then there was another rise, and they came to a farm gate set between field boundaries, and Maddie leaned the motorbike against the stone wall so they could eat their sandwiches.

From "Code Name Verity" by Elizabeth Wein