Thesaurus.com
Dictionary.com
Definitions

boundary

[boun-duh-ree, -dree] / ˈbaʊn də ri, -dri /


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.

Grain boundary diffusion involves applying tiny quantities of the most expensive and elusive rare earths, known as heavy rare earths, to a magnet to make it heat-resistant without sacrificing magnetic strength.

From The Wall Street Journal • Jun. 29, 2026

With a mass roughly 25 times that of Jupiter, GJ 504 b lies near the boundary between giant planets and brown dwarfs.

From Science Daily • Jun. 28, 2026

Caracas’ seismic risk is similar to the risk Los Angeles and San Francisco face, as each of the three cities sits near a tectonic plate boundary “and therefore historically have had bigger earthquakes,” Jones said.

From Los Angeles Times • Jun. 25, 2026

Venezuela lies along the boundary between the Caribbean and South American tectonic plates, which are moving past one another.

From BBC • Jun. 25, 2026

Maybe, like Rae, he has a boundary, too, and it’s been crossed too many times.

From "The Adoration of Jenna Fox" by Mary E. Pearson




Vocabulary lists containing boundary


Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "boundary" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com