Definition of "turn-by-turn" [turn-by-turn]

• Short for turn-by-turn navigation. A feature common on automotive or cellular (particularly of smartphones) GPS devices and applications. Its principal function is to give directions as the vehicle approaches the next navigation point. (noun)

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• "The cheapest and best phone-based directions - provided you have wireless coverage - come from the Google Maps software on most Android devices, which accepts voice input, provides accurate turn-by-turn directions and monitors traffic reports."
• "Google started the trend when it made free real-time, turn-by-turn driving instructions free on the Verizon Droid and, soon there after, other Android phones."
• "Probably the most popular Nokia Smartphone, even for corp use, the E71 is not getting this turn-by-turn navigation."