dendrochronology/ dɛndrokrəˈnɒlədʒi / noun
a way of finding the age of things by examining the growth rings in wood:
Dendrochronology has given a date for the foundations of 1400–1450.
The adjective is dendrochronological:
Dendrochronological dating of these burial sites has not been straightforward.
digital native/ ˌdɪdʒᵻtəl ˈneɪtᵻv / noun
a person who grew up using computers, smartphones, etc., and uses them in a way that is completely natural:
Digital natives seem to have the ability to learn new applications with ease.
The opposite is digital immigrant:
Don’t write old people off as digital immigrants – some of us are more tech-savvy than the youngsters!
Read all about it: Stop the world – I want to get off!
dumbwalk/ ˈdʌmwɔk / verb
to walk along without looking where you are going while using your phone:
I just saw two people dumbwalk into each other.
A person who is walking like this is called a dumbwalker:
Dumbwalkers are taking their life into their hands when they cross the road.
Read all about it: Will smartphones take over the world?