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Normal vs Null - What's the difference?

normal | null |

As nouns the difference between normal and null

is that normal is standard while null is zero, nil; the cardinal number before einn.

normal

English

(wikipedia normal)

Adjective

(en adjective)
  • According to norms or rules.
  • Healthy; not sick or ill.
  • Pertaining to a school to teach teachers how to teach.
  • (chemistry) Of, relating to, or being a solution containing one equivalent weight of solute per litre of solution.
  • (organic chemistry) Describing a straight chain isomer of an aliphatic hydrocarbon, or an aliphatic compound in which a substituent is in the 1- position of such a hydrocarbon.
  • (physics) (Of a mode in an oscillating system ) In which all parts of an object vibrate at the same frequency; See .
  • (geometry) Perpendicular to a tangent line or derivative of a surface in Euclidean space.
  • * The interior normal vector of a ideal perfect sphere will always point toward the center, and the exterior normal vector directly away, and both will always be co-linear with the ray whose' tip ends at the point of intersection, which is the intersection of all three sets of points.
  • (algebra) (Of a subgroup) whose cosets form a group.
  • (algebra) (Of a field extension of a field K) which is the splitting field of a family of polynomials in K.
  • (probability theory, statistics) (Of a distribution) which has a very specific bell curve shape.
  • (complex analysis) (Of a family of continuous functions) which is pre-compact.
  • (set theory) (Of a function from the ordinals to the ordinals) which is strictly monotonically increasing and continuous with respect to the order topology.
  • (linear algebra) (Of a matrix) which commutes with its conjugate transpose.
  • (functional analysis) (Of a Hilbert space operator) which commutes with its adjoint.
  • (category theory) (Of an epimorphism) which is the cokernel of some morphism.
  • (category theory) (Of a monomorphism) which is the kernel of some morphism.
  • (category theory) (Of a morphism) which is a normal epimorphism or a normal monomorphism.
  • (category theory) (Of a category) in which every monomorphism is normal.
  • (Of a real number) whose digits, in any base representation, enjoy a uniform distribution.
  • (topology) (Of a topology) in which disjoint closed sets can be separated by disjoint neighborhoods.
  • (rail transport, Of points) in the default position, set for the most frequently used route.
  • Synonyms

    * (usual) conventional, ordinary, standard, usual, regular, average, expected, natural * (healthy) hale, healthy, well * (perpendicular) at right angles to, perpendicular, orthogonal * (statistics) Gaussian

    Antonyms

    * (usual) unconventional, nonstandard, unusual * (healthy) ill, poorly (British), sick, unwell * (perpendicular) tangential * (rail transport) reverse

    Derived terms

    * abnormal * conormal * normalcy * normalise, normalize * normality * normally * normal school * normal vector * orthonormal * paranormal * subnormal * supernormal * ultranormal

    Usage notes

    * Warning: normal , when used to describe a majority group of people, can be considered offensive to those who don't consider membership of their own minority to be unusual. Care should be taken when juxtaposing normal, particularly with stereotypical labels, to avoid undue insult.

    Noun

    (en noun)
  • (geometry) A line or vector that is perpendicular to another line, surface, or plane.
  • (slang) A person who is normal, who fits into mainstream society, as opposed to those who live alternative lifestyles.
  • Synonyms

    * (normal person) see

    null

    English

    Noun

    (en noun)
  • A non-existent or empty value or set of values.
  • Zero]] quantity of [[expression, expressions; nothing.
  • (Francis Bacon)
  • Something that has no force or meaning.
  • (computing) the ASCII or Unicode character (), represented by a zero value, that indicates no character and is sometimes used as a string terminator.
  • (computing) the attribute of an entity that has no valid value.
  • Since no date of birth was entered for the patient, his age is null .
  • One of the beads in nulled work.
  • (statistics) null hypothesis
  • Adjective

    (en adjective)
  • Having no validity, "null and void"
  • insignificant
  • * 1924 , Marcel Proust, Within a Budding Grove :
  • In proportion as we descend the social scale our snobbishness fastens on to mere nothings which are perhaps no more null than the distinctions observed by the aristocracy, but, being more obscure, more peculiar to the individual, take us more by surprise.
  • 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.
  • Derived terms

    * nullity

    Verb

    (en verb)
  • to nullify; to annul
  • (Milton)

    See also

    * nil ----