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TOEFL IELTS BNC: 7986 COCA: 17470

invalid

1 invalid /ɪnˈvæləd/ adjective
1 invalid
/ɪnˈvæləd/
adjective
Learner's definition of INVALID
: not valid无效的: such as
: having no force or effect无效力的;作废的
: not based on truth or fact : not logical or correct无事实根据的;不合逻辑的;错误的
2 invalid /ˈɪnvələd/ Brit /ˈɪnvəˌliːd/ noun
plural invalids
2 invalid
/ˈɪnvələd/ Brit /ˈɪnvəˌliːd/
noun
plural invalids
Learner's definition of INVALID
[count]
: a person who needs to be cared for because of injury or illness伤残者;(不能自理的)病人
often used before another noun常用于另一名词前
3 invalid /ˈɪnvələd/ Brit /ˈɪnvəˌliːd/ verb
invalids; invalided; invaliding
3 invalid
/ˈɪnvələd/ Brit /ˈɪnvəˌliːd/
verb
invalids; invalided; invaliding
Learner's definition of INVALID
[+ object] British
: to release (someone) from active military service because of illness or injury(因伤病)令…退役usually used as (be) invalided通常用作(be) invalided
TOEFL IELTS BNC: 7986 COCA: 17470

invalid

1 of 4

adjective (1)

in·​val·​id (ˌ)in-ˈva-ləd How to pronounce invalid (audio)
: not valid:
a
: being without foundation or force in fact, truth, or law
an invalid assumption
declared the will invalid
b
: logically inconsequent
invalidly adverb

invalid

2 of 4

noun

in·​va·​lid ˈin-və-ləd How to pronounce invalid (audio)
 British usually  -ˌlēd
: one who is sickly or disabled

invalid

3 of 4

verb

in·​va·​lid ˈin-və-ləd How to pronounce invalid (audio)
-ˌlid,
 British usually  -ˌlēd,
 or  ˌin-və-ˈlēd
invalided; invaliding; invalids

transitive verb

1
: to remove from active duty by reason of sickness or disability
2
: to make sickly or disabled

invalid

4 of 4

adjective (2)

in·​va·​lid ˈin-və-ləd How to pronounce invalid (audio)
 British usually  -ˌlēd
1
: affected by disease or disability : sickly
2
: of, relating to, or suited to one that is sick
an invalid chair

Example Sentences

Word History

TOEFL IELTS BNC: 7986 COCA: 17470
invalid

adjective

ADVERB | VERBS ADVERBscientifically, statistically, technically科學上/統計學上/技術上無效VERBSbe無效become變得無效make sth, render sth使⋯無效This action would render the agreement invalid.這一行動會導致協議無效。consider sth, declare sth, deem sth認為⋯/宣佈⋯/認定⋯無效The contract was declared invalid.合同被宣佈無效。

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