The phrase "an uncommon feature" is correct and usable in written English.
You can use it to describe a characteristic or quality that is not frequently observed or found.
Example: "The museum's collection includes an uncommon feature: a rare artifact from ancient Egypt."
Alternatives: "a rare characteristic" or "an unusual aspect."
The steering wheel adjusts both in and out -- an uncommon feature today -- and up and down.
Bathrooms feature wonderful hot tub showers, and standard rooms, which do not have windows – not an uncommon feature in the city's hotels – have been enhanced by mirrored walls.
This study indicates that cavities are an uncommon feature even in control sites with only 3% of the trees harboring cavities in both forest types.
It is an uncommon feature of Eulerian spray models which are required in a number of non-stationary simulations because of the optimization capability of a solver coupling a Eulerian description for both phases.
Although there have long been landlords who would not let homes to people on benefits, with "No DSS" not an uncommon feature of letting agents' adverts, there are signs that choice is becoming more limited for those who claim help with their rent.
Extraosseous extension into the extradural space is an uncommon feature associated with increased symptoms and aggressiveness.
He might have also asserted that the presence of premeditation — the prosecutor's chief argument for taking it to adult court — was a particularly poor standard in the context of juvenile parricide; given the physical and psychological power imbalance inherent in child-parent relationships, a not uncommon feature to such murders is premeditation.
However, distant metastasis has been reported to be a very uncommon feature of struma ovarii.
Newly hatched larvae present a rather uncommon feature among bark beetles: they spent almost whole larval life in a collective intra-cortical brood chamber (Grégoire et al. 1982).
While gastrointestinal symptoms were a relatively uncommon feature in some previous reports (1, 3 ), diarrhea was frequently reported in other case series, including a major community outbreak at a Hong Kong apartment block (2, 4, 5, 12 ).
Interviews with several health professionals supported our observation that health practitioners engage in limited interaction across professional boundaries (data extracts 18 19): Outside of the scheduled activities, interprofessional interactions were a rather uncommon feature of work.
