The phrase "a permanent characteristic" is correct and usable in written English.
It can be used to describe a trait or quality that is enduring and not subject to change over time.
Example: "Her kindness is a permanent characteristic that defines her personality."
Alternatives: "an enduring trait" or "a lasting quality".
To this end pace should become a permanent characteristic so the arrival of the jet-heeled Memphis Depay in the summer from PSV Eindhoven will help.
Ethnic identity can change after arrival, as opposed to ethnicity which remains a permanent characteristic of the source country.
Variations in genetic phenotypes cause allelic changes in the form of expansion/contraction of an allele or simply microsatellite instability (MSI) and loss of heterozygosity (LOH- a permanent characteristic feature of cancerous tissues, which make the analysis of cancerous tissues for DNA related forensic identification purposes complicated (DiPerte et al. 2009).
A careful analysis of data collected by the HISCALE experiment on board Ulysses suggests that the quasi-periodic (QP) modulation of several or tens of minutes in flux and/or anisotropy/spectral observations is an almost permanent characteristic of the energetic (>∼50 keV) ion population in the outer and the high latitude middle magnetosphere of Jupiter.
The method allows for the control of all permanent characteristics of patients in addition to seasonal variation in risk.
This further demonstrates that PS exposure to the outer lipid leaflet of cancer cells is not caused by cell culturing procedures but is an original and permanent characteristic of cancer cells.
"It's a temporary condition of being self-focused, not a permanent generational characteristic".
In terms of emotion, ethos is viewed as a permanent condition characteristic of the average person and relatively mild in its nature; pathos, on the other hand, is a temporary emotional state, often violent.
We can also think of birth spacing as a permanent family characteristic.
In conventional buildings thermal mass is a permanent building characteristic depending on the building design.
We think that each of these things has an identifiable nature, but this is not the case; we are simply projecting onto an ever-changing reality, a world made up of what we think are permanent things with permanent characteristics.
