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Learn English · 把认识的词变成会用的词词条内容来自 Wiktionary，按 CC BY-SA 4.0 许可使用；每个词条页附有原文链接。

null · Learn English

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null

Wiktionary 原文

中文来自 ECDICT

adj.: 无效力的，无效的，无价值的
n.: 零，空，零位

演变路径（由近及远）

英语
借自 ←中古法语 nul
继承自 ←古法语 nul
源自 ←拉丁语 nūllus
继承自 ←原始意大利语族语 *noinolos
继承自 ←原始印欧语 *h₁óynos

词源说明

Borrowed from Middle French nul, from Latin nūllus.

释义（英文）

名词 Noun

A non-existent or empty value or set of values.
Zero quantity of expressions; nothing.
Something that has no force or meaning.
(computing) The null character; the ASCII or Unicode character (␀), represented by a zero value, which indicates no character and is sometimes used as a

.

(computing) The attribute of an entity that has no valid value.

One of the beads in nulled work.

(statistics) The null hypothesis.

形容词 Adjective

Having no validity; "null and void".
Insignificant.
Absent or non-existent.
(mathematics) Of the null set.
(mathematics) Of or comprising a value of precisely zero.
(genetics, of a mutation) Causing a complete loss of gene function; amorphic.
(mechanical engineering, of a position or setting) Neutral.

动词 Verb

(transitive, archaic) To nullify; to annul.
To return to the null position, setting, etc.
To form nulls, or into nulls, as in a lathe.
(computing, slang, transitive) To crack; to remove restrictions or limitations in (software).

词族

派生词（54）

conull nonnull nullability nullable nullcline nullectomy nullge nullification nulliparous nullish nulliverse nullspace phosphonull pseudonull /dev/null null anaphora null prefix null suffix null-terminated null and void nullary null byte injection null character null determiner nullform null hypothesis null infinity Null Island nullity null matrix null modem null edit null morpheme nullness null node null device nullo null object null path length null persistent

展开其余 14 个

null pointer null recurrence null recurrent null result null set null sign alef null aleph-null dev null non-null persistent null-grav null-homotopic null-subject language Rh-null

相关词（2）

annul nulled work