n. The forward curve of the upper back caused by constantly looking down at a smartphone or similar device.
Other Forms
If you’re in a public place, look around: How many people are hunching over a phone? Technology is transforming how we hold ourselves, contorting our bodies into what the New Zealand physiotherapist Steve August calls the iHunch….

How else might iHunching influence our feelings and behaviors?
—Amy Cuddy, “Your iPhone Is Ruining Your Posture — and Your Mood,” The New York Times, December 12, 2015
Or how about something you can use in a variety of positions so you can avoid that iHunch altogether?…
—Glenn Hart, “glennzb's Gadget Gift Guide (Volume II),” Newstalk ZB, November 25, 2015
The iHunch is known as a Dowager’s Hump in people in their seventies and eighties, but health professionals are now seeing it in students.
—Josie Cochrane, “iHunch affecting ill-postured student masses,” Critic, May 04, 2014
2010 (earliest)
Interested to see how @apple addresses ergonomics of using #iPad cf using laptop (http://bit.ly/clnGIE) — we'll be seeing the #iHunch soon.
—Sameer Padania, “Interested to…,” Twitter, January 27, 2010