The phrase "a secondary feature" is correct and usable in written English.
It can be used to describe an additional or less important characteristic of something, often in contrast to a primary feature.
Example: "While the main attraction of the exhibit is the artwork, a secondary feature is the interactive display that engages visitors."
Alternatives: "a minor aspect" or "a supplementary characteristic".
Both viewed economics as a secondary feature of our lives.
The barks of some trees are notable primarily for their texture, with color a secondary feature.
It's great to have a blog, of course, especially one that is informative and well written, but it should be a secondary feature.
But creative use of a bulky instrument is only a secondary feature of this manic show, which had a brief East Village run earlier in the year; creative use of Schubert's music is the main one.
Content is not the issue here, but rather the speed, the weird unconscious surety, with which the schoolgirls of Tokyo took up a secondary feature (text messaging) of a new version of the cellular telephone, and generated, almost overnight, a micro-culture.
Unlike for Locke and his contemporary followers, however, coercive power is not a secondary feature of the civil state, necessary to back up laws.
There are a handful of praiseworthy pass rushers up front, staunch interior players, a rising star at linebacker (Sean Weatherspoon) and a secondary featuring three big-name corners: Brent Grimes, Dunta Robinson and newbie Asante Samuel.
Taken together, these data suggest that anion channel activation is not a passive secondary feature of plant responses to stress, but a driver of these processes.
We used to see bills like the Democratic stimulus package: mostly serving their ostensible purpose, with the special-interest add-ons a distinctly secondary feature.
Clinton — whose "identity," after all, comprises more than half the electorate and extends, by definition, into every family on earth — treated her gender as a grace note, a significant but ultimately secondary feature, like Jimmy Carter's Southernness or Bob Dole's war wound.
And while some may be quick to point out that the Panthers aren't exactly a Top 25-worthy team, Paul Chryst's squad has a talented secondary featuring safety Jason Hendricks, who ranked sixth nationally in interceptions per game last fall, and solid cornerbacks K'Waun Williams and Lafayette Pitts.
