Word.ws English Dictionary

upper boundary

upper boundary noun: the most ancient time encompassed by a given period of time.

Noun

upper boundary (plural upper boundaries)

  1. The most ancient time encompassed by a given period of time.
  2. The most recent time encompassed by a given geological period.

Forms of upper boundary

pluralupper boundaries

Questions about upper boundary

What does upper boundary mean?
Upper boundary means the most ancient time encompassed by a given period of time.
What part of speech is upper boundary?
Upper boundary is a noun.
What is the plural of upper boundary?
The plural of upper boundary is upper boundaries.

Words near upper boundary in the dictionary

  1. upper body
  2. upper body day
  3. upper body days
  4. upper bound
  5. upper boundaries
  6. upper boundary
  7. upper bounds
  8. Upper Broughton
  9. Upper Bun-ayan
  10. Upper Burnie
  11. Upper Burringbar

Source and license

Adapted from Wiktionary: upper boundary (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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