header


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header

1. a reservoir, tank, or hopper that maintains a gravity feed or a static fluid pressure in an apparatus
2. a manifold for distributing a fluid supply amongst a number of passages
3. a machine that trims the heads from castings, forgings, etc., or one that forms heads, as in wire, to make nails
4. a person who operates such a machine
5. the action of striking a ball with the head
6. Computing a block of data on a tape or disk providing information about the size, location, etc., of a file

Header

A masonry unit laid so that its short end is parallel to the face, overlapping two adjacent widths of masonry; a framing member supporting the ends of joists, transferring the weight of the latter to parallel joists and rafters.

Header

 

the cutting unit of a grain-harvesting combine. It cuts the stalks and feeds them on a conveyor to the thresher.

header

[′hed·ər]
(building construction)
A framing beam positioned between trimmers and supported at each end by a tail beam.
(civil engineering)
Brick or stone laid in a wall with its narrow end facing the wall.
(communications)
The first section of a message, which contains information such as the addressee, routing, data, and origination time.
(computer science)
(electricity)
A mounting plate through which the insulated terminals or leads are brought out from a hermetically sealed relay, transformer, transistor, tube, or other device.
(engineering)
A pipe, conduit, or chamber which distributes fluid from a series of smaller pipes or conduits; an example is a manifold.
(graphic arts)
Text that is printed at the top of every page of a document or report; may contain the page number.
(mechanical engineering)
A machine used for gathering or upsetting materials; used for screw, rivet, and bolt heads.
(mining engineering)
An entry-boring machine that bores the entire section of the entry in one operation.
A rock that heads off or delays progress.
A blasthole at or above the head.

header

1. A masonry unit, laid so that its ends are exposed, overlapping two or more adjacent withes of masonry and tying them together; a bondstone; a bonder.
3. A framing member which crosses and supports the ends of joists, rafters, etc., transferring the weight of the latter to parallel joists, rafters, etc.
4. In plumbing, a pipe having many outlets which are parallel and frequently at 90° to the center line of the pipe.
5. A chamber into which a number of pipes open.
7. A transverse raceway for electrical conductors which provides access to a cellular floor, thereby permitting the convenient installation of electrical conductors.
8. The structural member immediately over a door opening.

header joist, header, lintel, trimmer joist

header joist
header, 3
header, 1
A short structural member (as used in framing an opening) which is fastened between parallel full-length framing members at right angles to

header

(1)
The portion of a packet, preceding the actual data, containing source and destination addresses, error checking and other fields.

header

(2)
The part of an electronic mail message or news article that precedes the body of a message and contains, among other things, the sender's name and e-mail address and the date and time the message was sent.

header

(1) In a disk or tape file, a set of data that resides permanently at the beginning. It may be used for identification only (type of file, date of last update, etc.), or it may describe the structural layout of the contents, as is common with many document and database formats.

(2) In a document or report, common text printed at the top of every page.

(3) Any caption or description used as a headline.

(4) In communications and networking, a group of fields added to the beginning of the message or packet. The fields typically include source and destination addresses as well as data that describe the message content. See HTTP header, email header and header file.
References in periodicals archive ?
New, easy-to-service belt-drive augers at the ends of the 16-foot headers move the crop quickly to the conditioners, minimizing the chance of double cuts, crop wrapping and buildup.
The client first sends HTTP/1.1 request that contains Upgrade header field with the "h2c" token and a HTTP2-Setting header field (Figure 2).
PubWise is an application that manages the entirety of header bidding technology for any website(s).
The functions of the header parser are: -check and identify the protocol, Extract fields for processing by subsequent stages of the system, classify the header fields by the protocol (Context Information table), and send this table for Header Inspection Unit (HIU), Packet Reassembly Unit (PRU) and Report Generator Unit (RGU).
If you don't want color in the group sections, set Back Color to White and Alternate Back Color to No Color for group header and footer sections.
(2012) developed an experimentally-validated model of a microchannel evaporator with considering quality and header pressure drop induced maldistribution in the horizontal header.
Van Persie snr (above), who has had his work exhibited across Europe, said: "I loved that diving header. It is the most artistic goal my son has ever scored.
Louis Moult and Gavin Cowan both had first-half chances for the hosts, but both directed headers too high, Moult also saw a mis-directed cross come back off the bar, while in the second period Andy Brown was unlucky to see his header tipped round the post by Matty Glennon.
In this paper, R410A distribution in the vertical header of a multi-pass heat exchanger was studied.
The compact header and socket help achieve high-performance electronic equipment designs in a small form factor as required by today's communications, military/aerospace, industrial production, data center and high-performance computing applications.
The early goal from Magnay made all the difference and then Hatch has come on and scored straight away with a brilliant header to level things up."