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1. Oxford American Dictionary

   null

   • IPA[nəl]

   美式

   • adj.
     having no legal or binding force; invalid；having or associated with the value zero.
   • n.
     a zero.；a dummy letter in a cipher.
   • v.
     combine (a signal) with another in order to create a null; cancel out
2. • 釋義
   • 相關詞

   adj.

   形容詞

   • 1. having no legal or binding force; invalid the court ruled that the contract contained several infringements and therefore declared it null and void 同義詞 invalid, null and void, void, annulled, nullified, ... 更多canceled, abolished, revoked, rescinded, repealed反義詞 valid
   • 2. having or associated with the value zero.
   • ▪ (of a set or matrix) having no elements, or only zeros as elements.
   • 3. lacking distinctive qualities; having no positive substance or content his curiously null life 同義詞 lacking in character, empty, characterless, blank, colorless, ... 更多expressionless, vacuous, insipid, vapid, inane反義詞 full, colorful, interesting

   n.

   名詞

   • 1. literary a zero.
   • ▪ literary a dummy letter in a cipher.
   • ▪ literary a condition of no signal.
   • ▪ literary a direction in which no electromagnetic radiation is detected or emitted.

   v.

   動詞

   • 1. combine (a signal) with another in order to create a null; cancel out the tumor can be more readily identified by nulling the high signal from bone marrow

   null hypothesis

   • n.
     (in a statistical test) the hypothesis that there is no significant difference between ...

   Oxford Dictionary

   null link

   • n.
     a reference incorporated into the last item in a list to indicate there are no further items in ...

   Oxford American Dictionary

   null hypothesis

   • n.
     (in a statistical test) the hypothesis that there is no significant difference between ...

   Oxford American Dictionary

   null character

   • n.
     a character denoting nothing, usually represented by a binary zero.

   Oxford American Dictionary

   null link

   • n.
     a reference incorporated into the last item in a list to indicate there are no further items in ...

   Oxford Dictionary

   null character

   • n.
     a character denoting nothing, usually represented by a binary zero.

   Oxford Dictionary

   null instrument

   • n.
     an instrument used to measure an electrical quantity by adjusting known quantities in the ...

   Oxford Dictionary

3. • 更多解釋

   null

   • IPA[nʌl]

   英式

   • adj.
     having no legal or binding force; invalid: the court ruled that the contract contained several infringements and therefore declared it null and void
   • n.
     a zero.
   • v.
     combine (a signal) with another in order to create a null; cancel out: the tumour can be more readily identified by nulling the high signal from bone marrow

   Oxford Dictionary