curvature noun [U or C]. âº the âstate of being âcurved or âbent: the curvature of the earth's âsurface a âpronounced curvature of the âspine. (Definition of curvature from the Cambridge Advanced Learnerâs Dictionary & Thesaurus Â© Cambridge University Press). See all translations.
The Apple Watch uses your age, gender, height and weight, in addition to the GPS in your iPhone and data from its own built-in sensors, to calculate both your resting calories and ones you burn during exercise.
1 Tap on your Apple Watch. 2  Your device's name should appear on the watch face. 3  On your iPhone, tap the 5-digit name that matches the one you see on your Apple Watch. 4  A six-digit code will appear on your Apple Watch. 5  Enter that code on your iPhone to pair the two devices.