Definitions
Century Dictionary and Cyclopedia
- n. One who or that which differentiates: as, the radicals of written Chinese serve as differentiators of the sense, while the phonetics play the same part as regards sound.
Wiktionary
- n. Anything that differentiates, or causes differentiation (in any sense)
GNU Webster's 1913
- n. One who, or that which, differentiates.
WordNet 3.0
- n. a person who (or that which) differentiates
Examples
“Their main differentiator is that it’s a classless, and claims to be more narrative and share interpretive power with characters (implied: at least more than D&D).”
Goodman Games Launches “Eldritch Role-Playing System” « Geek Related
“Obviously the government plays a role, but I think the main differentiator here is: it is the homeowner who steps forward and who says, I need help.”
“SM: I just don't see that as a long-term differentiator and how you are going to be positioned.”
“Our long term differentiator is to "sustainable" wave passes.”
“I’ve worried for some time that “open” as a market differentiator is becoming diluted and washed out, just as “organic” and “green” before.”
“The biggest differentiator is the G1’s slide-out keyboard, some might find easier to type on than the iPhone’s virtual keyboard.”
Google’s First Phone: The iPhone With More Buttons - Bits Blog - NYTimes.com
“Another differentiator is a couple of high-profile artists”
“The differentiator will be the informed users who mobilize to get the best bang for their buck.”
“As a drive that is generally on par with any other USB portable HDD, the differentiator is the backup software bundled.”
“Another differentiator is a couple of high-profile artists - namely”
Lists
These user-created lists contain the word ‘differentiator’.
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discoveries
These are lexical items new to me that I've discovered in actual use (i.e. not in dictionaries, lists, or this site).
Looking back over this list, I haven't the slightest idea what mos...haymow, hawsepipe, stridor, bariatric, autotelic, apotropaic, cyanotype, tourelle, autobody, zudecca, stifado, corbeille and 1073 more...
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_mark's keywords ™
words that describe me or that i am focusing on.
( personal list )
more:
http://www.wordnik.com/lists/personas--2<...satirical, dark, enigmatic, androgyny, appreciative, opinionated, inquisitive, sensitive, nonchalant, acerbic, scientific, circumspective and 220 more...
Tweets
Looking for tweets for differentiator.

qroqqa New to me in any sense, but the sense I just came across is a commercial one, illustrated by these:
Although I’m somewhat biased, I believe decision patterns are the ultimate differentiator for anyone who offers consulting services.
—Decision Driven Blog, 22/08/08
Simply put Kevin thinks that the hoops a typical out-of-the-box user has to jump through to install additional applications other than what is included by the OEM might be a big differentiator when it comes to sorting out which NetBook(s) might become popular with users.
—GottaBeMobile, 14/08/08 Sep 1, 2008