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TOEFL IELTS BNC: 7986 COCA: 17470

invalid

adjective
/ɪnˈvælɪd/
/ɪnˈvælɪd/
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  1. not legally or officially acceptable（法律上或官方）不承认的；无效的
    • The treaty was declared invalid because it had not been ratified.条约没有得到批准，因此被宣布无效。
    • People with invalid papers are deported to another country.持无效证件的人被驱逐到别国。
    • This action would render the agreement invalid.这一行动会导致协议无效。
    Topics Law and justicec1
    Oxford Collocations Dictionaryadverb
    • scientifically
    • statistically
    • technically
    • …
    verbs
    • be
    • become
    • make something
    • …
    See full entry
  2. not based on all the facts, and therefore not correct无充分事实的；站不住脚的
    • an invalid argument站不住脚的论点
    Oxford Collocations Dictionaryadverb
    • scientifically
    • statistically
    • technically
    • …
    verbs
    • be
    • become
    • make something
    • …
    See full entry
  3. (computing计算机) of a type that the computer cannot recognize不能识别的；无效的
    • An error code will be displayed if any invalid information has been entered.输入了无效信息将显示错误代码。
    • invalid characters无效字符
    Topics Computersc2
    4. opposite valid
    Word Originadjective mid 16th cent. (earlier than valid): from Latin invalidus, from in- ‘not’ + validus ‘strong’ (from valere ‘be strong’).

invalid

noun
/ˈɪnvəlɪd/
/ˈɪnvəlɪd/
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  1. a person who needs other people to take care of them, because of illness that they have had for a long time病弱者；久病衰弱者
    • She had been a delicate child and her parents had treated her as an invalid.她小时候很虚弱，父母就把她当个病人照料。
    • his invalid wife他的体弱多病的妻子
    • He was found guilty of murdering his invalid father.他被判谋杀了他残疾的父亲。
    • Her husband was an invalid and couldn’t come to the door to open it.她的丈夫是个病人，不能来开门。
    Topics Illnessc2
    Word Originnoun mid 17th cent. (as an adjective in the sense ‘infirm or disabled’): a special sense of invalid (adjective), with a change of pronunciation.

invalid

verb
/ˈɪnvəlɪd/
/ˈɪnvəlɪd/
(British English)
Verb Forms
present simple I / you / we / they invalid
/ˈɪnvəlɪd/
/ˈɪnvəlɪd/
he / she / it invalids
/ˈɪnvəlɪdz/
/ˈɪnvəlɪdz/
past simple invalided
/ˈɪnvəlɪdɪd/
/ˈɪnvəlɪdɪd/
past participle invalided
/ˈɪnvəlɪdɪd/
/ˈɪnvəlɪdɪd/
-ing form invaliding
/ˈɪnvəlɪdɪŋ/
/ˈɪnvəlɪdɪŋ/
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  1. invalid somebody (out) | invalid somebody (out of something) to force somebody to leave the armed forces because of an illness or injury（因伤病）令…退役
    • He was invalided out of the army in 1943.他于 1943 年因伤病退役。
    Word Originverb mid 17th cent. (as an adjective in the sense ‘infirm or disabled’): a special sense of invalid (adjective), with a change of pronunciation.
TOEFL IELTS BNC: 7986 COCA: 17470
invalid

adjective

ADVERB | VERBS ADVERB➤scientifically, statistically, technically科學上／統計學上／技術上無效VERBS➤be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。
TOEFL IELTS BNC: 7986 COCA: 17470
invalid noun
⇨ patient
TOEFL IELTS BNC: 7986 COCA: 17470

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