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Header vs Undefined - What's the difference?

header | undefined |

As a noun header

is the upper portion of a page (or other) layout.

As an adjective undefined is

lacking a definition or value.

header

English

Noun

(en noun)
  • The upper portion of a page (or other) layout.
  • If you reduce the header of this document, the body will fit onto a single page.
  • Text, or other visual information, used to mark off a quantity of text, often titling]] or [[summarize, summarizing it.
  • Your header is too long; "Local Cannibals" will suffice.
  • Text, or other visual information, that goes at the top of a column of information in a table.
  • That column should have the header "payment status".
  • (informal) A font, text style, or typesetting used for any of the above.
  • Parts of speech belong in a level-three header . Level-two headers are reserved for the name of the language.
  • a brick that is laid sideways at the top of a wall or within the brickwork with the short side showing; compare stretcher
  • This wall has four header courses.
  • a horizontal structural or finish piece over an opening
  • a machine that cuts the heads off of grain etc
  • They fed the bale into the header .
  • (soccer) the act of hitting the ball with the head
  • His header for the goal followed a perfect corner kick.
  • *{{quote-news
  • , year=2011 , date=October 1 , author=Phil Dawkes , title=Sunderland 2 - 2 West Brom , work=BBC Sport citation , page= , passage=The Black Cats had a mountain to climb after James Morrison's header and Shane Long's neat side-foot finish gave Albion a 2-0 lead five minutes in.}}
  • a headlong fall or jump
  • ''The clown tripped over the other clown and took a header .
  • (computing) the first part of a file or record that describes its contents
  • The header includes an index, an identifier, and a pointer to the next entry.
  • (networking) the first part of a packet, often containing its address and descriptors
  • The encapsulation layer adds an eight-byte header and a two-byte trailer to each packet.
  • A raised tank that supplies water at constant pressure, especially to a central heating and hot water system
  • A pipe which connects several smaller pipes.
  • Common practice is to use plastic pipes with iron headers .

    Synonyms

    * (text used to mark off a quantity of text) head, heading * (brick that is laid sideways) bonder, coping, cope * (horizontal structural or finish piece over an opening) lintel

    Derived terms

    * diving header

    Anagrams

    * *

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
  • The result of division by zero is undefined .

    Antonyms

    * defined