Boundary — Meaning, Definition & Synonyms

noun /ˈbau̇n-d(ə-)rē/ bound·ary

Meaning & Definition of Boundary

Boundary (noun)

  1. something that indicates or fixes a limit or extent

Boundary (noun) — Senses, Synonyms & Antonyms

  1. a real or imaginary point beyond which a person or thing cannot go

    "parents have to set boundaries for their children, and the children want them to"

    similar: bound, cap, ceiling, confines, end, extent, limit, limitation, line, termination
    related: extremity, fag end, terminus, border, brim, edge, margin, rim, verge, outside, bar, barrier, fence, hedge, restraint, stop, wall

  2. the line or relatively narrow space that marks the outer limit of something

    "that chalk line marks the boundary of our playing field"

    similar: border, borderline, bound, brim, circumference, compass, confines, edge, edging, end, frame, fringe, hem, margin, perimeter, periphery, rim, skirt, skirting, verge
    related: ambit, brink, crest, curb, cusp, lip, ceiling, maximum, demarcation, extent, limitation, measure, mere, restriction, termination, borderland, frontier, march, outskirts, pale, selvage, lap, shore
    near: center, core, heart, inner, inside, interior, middle, within

Synonyms, Thesaurus & Another Word for Boundary

The most common words with a similar meaning to Boundary:

bound, cap, ceiling, confines, end, extent, limit, limitation, line, termination, border, borderline, brim, circumference, compass, edge, edging, frame, fringe, hem, margin, perimeter, periphery, rim, skirt, skirting, verge

Related Words for Boundary

extremity, fag end, terminus, outside, bar, barrier, fence, hedge, restraint, stop, wall, ambit, brink, crest, curb, cusp, lip, maximum, demarcation, measure, mere, restriction, borderland, frontier, march, outskirts, pale, selvage, lap, shore

Near Antonyms of Boundary

center, core, heart, inner, inside, interior, middle, within

Word Forms of Boundary

Inflections: boundaries

Derived words: boundaryless (adjective), boundarylessness (noun)

Origin & Etymology of Boundary

bound:6 + -ary:1

First known use: 1598

Vocabulary Lists & Topics for Boundary

Words & Phrases Containing Boundary

boundary layer, K-T boundary

Frequently Asked Questions about Boundary

What does "Boundary" mean?

"Boundary" means something that indicates or fixes a limit or extent. As a noun, it is defined as: something that indicates or fixes a limit or extent. It has 2 distinct senses.

What is another word for "Boundary"?

Other words for "Boundary" include bound, cap, ceiling, confines, end, extent, limit and limitation. The best synonym depends on which meaning of "Boundary" you intend.

What are different ways to say "Boundary"?

There are 57 words and phrases with a similar meaning to "Boundary". Common alternatives include bound, cap, ceiling, confines, end, extent, limit, limitation, line and termination.

How do you use "Boundary" in a sentence?

Examples of "Boundary" in a sentence: "parents have to set boundaries for their children, and the children want them to"; "that chalk line marks the boundary of our playing field".

Is "Boundary" a noun, verb, or adjective?

"Boundary" is a noun.

Is "Boundary" useful for IELTS, TOEFL, and other English exams?

As a C1-level word, "Boundary" is typical of Cambridge C1 Advanced (CAE), IELTS band 7.0–8.0, TOEFL iBT 95–113, PTE Academic 76–84, TOEIC Listening & Reading 945+. Advanced words like this are also useful for the GRE, SAT, GMAT, and LSAT.

How do you pronounce "Boundary"?

"Boundary" is pronounced /ˈbau̇n-d(ə-)rē/ and divided into syllables as bound·ary.

What is the origin of the word "Boundary"?

"Boundary" comes from bound:6 + -ary:1. First known use: 1598.