Definition of "invalid"

Invalidism therefore referred to a lack of power as well as a tendency toward illness. It is for this reason that I choose to discuss the invalid woman rather than just the ill one.

2000, Diane Price Herndl, Invalid Women: Figuring Feminine Illness in American Fiction and Culture, 1840-1940, University of North Carolina Press, page 1

Blackadder: Right, Baldrick, this is an old trick I picked up in the Sudan. We tell HQ that I’ve gone insane, and I’ll be invalided back to Blighty before you can say "wibble" — a poor, gormless idiot.

1989, Richard Curtis, Ben Elton, “Goodbyeee”, in Blackadder Goes Forth

The Japanese armored cruiser Nisshin has been hit badly. Shells have sheared off several main guns and virtually disarmed the vessel. In the middle of all this, one Ensign Isoroku Yamamoto loses two fingers to the remains of an explosion. If he'd lost a third, he would've been invalided out of military service. Thus, by the retention of a single digit would there be rather large consequences a few decades later on down the line.

2019 September 18, Drachinifel, 26:33 from the start, in Battle of Tsushima - When the 2nd Pacific Squadron thought it couldn't get any worse...‎, archived from the original on 4 December 2022