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Peristome vs Null - What's the difference?

peristome | null |

As nouns the difference between peristome and null

is that peristome is (botany) one or two rings of tooth-like appendages surrounding the opening of the capsule of many mosses while null is zero, nil; the cardinal number before einn.

peristome

Noun

(en noun)
  • (botany) One or two rings of tooth-like appendages surrounding the opening of the capsule of many mosses.
  • * 1911 , ,
  • Its removal does not, however, leave the mouth of the capsule wide open, for around the margin are two circles of pointed teeth forming the peristome .
  • (zoology) The parts of or surrounding the mouths of numerous invertebrates.
  • * 1911 , ,
  • We can distinguish therefore in the body of a polyp the column, circular or oval in section, forming the trunk, resting on a base or foot and surmounted by the crown of tentacles, which enclose an area termed the peristome', in the centre of which again is the mouth. The mouth may be level with the surface of the ' peristome , or may be projecting and trumpet-shaped.
  • The lip, or edge of the aperture, of a spiral shell.
  • Anagrams

    *

    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 ----