A smartphone having a screen which is intermediate in size between that of a typical smartphone and a tablet computer.
Early 21st century: blend of phone and tablet.
“With the 4″ screen, it’s perfect for the phablet user.”
The last stage of life; old age.
Senectitude comes from the Medieval Latin noun senectitūdō meaning “old age,” which in turn comes from Classical Latin senectūs, a derivative of the noun senex meaning “old man.” Senectitude entered English in the late 1700s, more precisely, in 1796 in Jonathan Swift’s Gulliver’s Travels