IPA: //sɪˈnɪfɪkətɪv//
KK: /sɪgˈnɪfɪkətɪv/
Having meaning or importance; something that indicates or shows a particular idea or feeling.
The results of the study were significative in understanding the impact of climate change.
Significative → It is formed from "significare" (meaning to signify or indicate) and the suffix "-ive" (meaning having the nature of). The word "significative" means having the nature of signifying or indicating something.
Think of something that 'indicates' or 'signifies' — 'significare' means to signify, and '-ive' suggests it has that quality.