The phrase "a major realization" is correct and usable in written English.
It can be used when discussing an important insight or understanding that has been achieved.
Example: "After months of research, I had a major realization about the impact of climate change on local ecosystems."
Alternatives: "a significant insight" or "a crucial understanding."
Rose quartz: This crystal will lead you to a major realization that you forget to write down.
To the first end, we overview our work in real-time data collection over opportunistic and participatory sensing networks, overarching a major realization in VANets.
A major realization is that accumulated physiological stress can ultimately lead to tree mortality and changes in species distributions, particularly in areas away from maritime influences.
There doesn't seem to have been a major realization within the US's institutions its intelligence agencies, its bureaucracy, its electoral machinery that true digital security required both better technical infrastructure and better public awareness about the risks of hacking, meddling, misinformation, and more.
(Everyone wanted to do it again and again, and I had a major realization beneath it). And learning to go to bed without a phone by the pillow led to the most restful sleep I've had in ages.
One day, she had a major realization.
One major realization, he says, was that decisions that influence cities' climate resilience often fall outside the remit of local legislators.
For the unrounded environment, there were four major realization types, [Z], [G], [L], and [D].
Regardless of the renditions, [L] was the major realization, accounting for over 60% of the data.
Relative to these two dialects, Chôan simplified its /dz/ realization to only two categories, [L] and [D], with [L] being the major realization, accounting for 61% of the data.
In an interview for "The Hunger Games: Catching Fire" from last year that's been making the rounds again, Harrelson has the major realization that the Hemsworth brothers are related.
