invalid

patient, invalid

名词 invalid:

1. someone who is incapacitated by a chronic illness or injury
   同义词：shut-in

动词 invalid:

1. force to retire, remove from active duty, as of firemen
2. injure permanently
   同义词：disable, incapacitate, handicap

形容词 invalid:

1. having no cogency or legal force
2. no longer valid

1. His claim to ownership is invalid.
   他的所有权是无效的。
2. Nobody looks after the invalid.
   没人照顾这个病人。
3. The girl spent all her spare time to take after her invalid mother.
   这个女孩把她所有的业余时间都用来照顾长期生病的母亲。
4. This ticket has passed its expiration date, and so it is now invalid.
   这张票已过了有效期，现在作废了。
5. He never fully recovered, and had to spend the rest of his life as an invalid.
   他没能完全康复，于是不得不成了一名残疾者度过余生。

invalid

n.（名词）
One who is incapacitated by a chronic illness or disability.
病人：由于慢性病或残疾引起无能力的人
adj.（形容词）
Incapacitated by illness or injury.
有病的：由疾病或伤残造成的无能力的
Of, relating to, or intended for invalids.
供病人用的：属于、关于、或为病人打算的
v.tr.（及物动词）
in.va.lid.ed,in.va.lid.ing,in.va.lids
To incapacitate physically.
使病弱：使体质上无力
Chiefly British To release or exempt from duty because of ill health:
【多用于英国】 使因病退役：因为身体不好解除或免除责任：
例句：
.I was not quite sick enough to be invalided out, even though I was of no more use.(Mary Lee Settle)
.即使我不再有用处，还不至病得严重到可以免除义务.(玛丽·李·塞托)

来源：
From invalid 2 influenced by French invalide [sickly, infirm] from Latin invalidus
源自 invalid2 受 法语 invalide的影响 [有病的，体弱的] 源自 拉丁语 invalidus

invalid
invalid 2

adj.（形容词）
Not legally or factually valid; null:
无效的：法律上或事实上是无效的；无束缚力的：
例句：
an invalid license.
作废的执照

Falsely based or reasoned; faulty:
无效果的：根据或推理错误的；有错误的：
例句：
an invalid argument.
错误的辩论

来源：
Latin invalidus [weak]
拉丁语 invalidus [弱的]
in- [not] * see in-
in- [不] *参见 in-
validus [strong] from valôre [to be strong] * see wal-
validus [强的] 源自 valôre [变强大的] *参见 wal-

【引伸】
in.valid.ity
inval.idly
adv.（副词）