Meaning of “significant” in the English Dictionary

"significant" in British English

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uk /sɪɡˈnɪf.ɪ.kənt/ us /sɪɡˈnɪf.ə.kənt/

significant adjective (IMPORTANT)

B2 important or noticeable:

There has been a significant increase in the number of women students in recent years.
The talks between the USA and the USSR were very significant for the relationship between the two countries.

More examples

  • Is there any significant difference in quality between these two items?
  • Research in the field of genito-urinary medicine has led to significant health advances in the last decade.
  • The institution of a Freedom of Information Act has had a significant effect.
  • You have all invested significant amounts of time and energy in making this project the success that it is.
  • Lotus make luxury cars for a small but significant niche market.

(Definition of “significant” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"significant" in American English

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us /sɪɡˈnɪf·ɪ·kənt/

important, large, or great, esp. in leading to a different result or to an important change:

This election reaffirms a significant shift of the center of power.
Marriage is a significant commitment.
noun [ U ] us /sɪɡˈnɪf·ɪ·kəns/

The full significance of space exploration may not be understood for many years to come.

(Definition of “significant” from the Cambridge Academic Content Dictionary © Cambridge University Press)