The phrase "a half of existence" is correct and usable in written English.
It can be used in contexts discussing the significance or impact of something that feels incomplete or only partially fulfilling in life.
Example: "For many, love is a half of existence, providing meaning and purpose that is otherwise lacking."
Alternatives: "part of life" or "portion of being".
The plaintiff contended that management had masked the firm's failing health over its last year and a half of existence.
Meanwhile, the southern kingdom of Judah was to have another century and a half of existence before a similar and even grimmer fate befell it.
Founded in Le Locle in 1865 by a visionary watchmaker, Georges Favre-Jacothethe Manufacture Zenith earned swift recognition for the precision of its chronometers with which it has won 2,333 chronometry prizes in a century and a half of existence: an absolute record in terms of pocket watches, onboard timers and wristwatches.
Traffic was stagnant for MetaverseXXX's first year and a half of existence, but since January when consumer VR really hit the market it's been doubling monthly.
In a year and a half of label existence, that is a meager output.
It played much the same role in this country for the first century and a half of our existence.
Maven, which launched in January 2016 and has undergone a number of changes in its two-and-a-half years of existence.
Ms. O'Donnell's decision to pull out of the venture means that Rosie -- Gruner & Jahr's risky attempt to turn the venerable but struggling McCall's magazine into a lucrative platform for a star -- will publish its final issue in December, after little more than a year and half of existence.
IN ITS four and a half years of existence, the Good Friday Agreement has sustained many blows.
Ivón Padilla-Rodríguez identifies the reason for this disjuncture by examining the consequences of the child labor ban's agricultural exemption in its first two and a half decades of existence.
Today, Tim Cook told us that Apple has sold over 100M iPads in just 2 and a half years of existence.
