Tra từ significant - Từ điển Oxford Advanced Learner 8th

sig·nifi·cant AW BrE [sɪɡˈnɪfɪkənt] NAmE [sɪɡˈnɪfɪkənt] adjective
1. large or important enough to have an effect or to be noticed
•a highly significant discovery
• The results of the experiment are not statistically significant.
• There are no significant differences between the two groups of students.
•Your work has shown a significant improvement.
•These views are held by a significant proportion of the population.
•It is significant that girls generally do better in examinations than boys.
•The drug has had no significant effect on stopping the spread of the disease.
compare ↑insignificant
2. having a particular meaning
• It is significant that he changed his will only days before his death.
3. usually before noun having a special or secret meaning that is not understood by everyone
Syn: ↑meaningful
•a significant look/smile

Word Origin:
late 16th cent. (in sense 2): from Latin significant- ‘indicating’, from the verb significare ‘indicate, portend’, from signum ‘token’.

Thesaurus:
significant [significant] adj.
•This is a highly significant discovery.
important • • great • • momentous • |informal big • |formal notable •
Opp: insignificant
significant/important for/to sb/sth
significant/important/notable that…
a/an significant/important/great/momentous/big/notable events/changes/developments
a/an significant/important/great/big/notable difference/feature/achievment/success
Significant or important? Important is a more general word. Things that are significant are important from a particular point of view, have been measured in some way, or are great in degree:
•These figures are statistically significant.
✗ These figures are statistically important.:
•a significant proportion of the population
✗ an important proportion of the population

Example Bank:
•These differences are not statistically significant.
•This development proved highly significant for the whole town.
•What makes this discovery significant is that it goes against our theory.
•rituals which are deeply significant to Christians
•It is significant that girls generally do better in examinations than boys.
•The results of the experiment are not statistically significant.
•This is a highly significant discovery.