lap

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lap

1
the area formed by the upper surface of the thighs of a seated person

lap

2
1. a rotating disc coated with fine abrasive for polishing gemstones
2. any device for holding a fine abrasive to polish materials
3. Metallurgy a defect in rolled metals caused by the folding of a fin onto the surface
4. a sheet or band of fibres, such as cotton, prepared for further processing
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

Lap

The length by which one piece of material overlaps another.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Lap

 

an attachment on honing and lapping machines for fine finishing (grinding and lapping) of surfaces. External cylindrical surfaces are finished using laps constructed in the form of rings with an adjustable longitudinal slit and a screw for regulating dimensions; the length of the lap should not be less than the diameter of the workpiece. Laps for grinding holes are constructed in the form of thin-walled cylinders with adjustable slits. Disk laps with grooves placed longitudinally and transversely at intervals of 12–15 mm are used for preliminary grinding of flat surfaces, and laps without grooves are used for the final finishing. For gear finishing, the laps used are also constructed in the form of gear wheels. Laps are made of cast iron, steel, copper, brass, and other materials. As a rule, the material from which the lap is made must be softer than the workpiece material.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

lap

[lap]
(civil engineering)
The length by which a reinforcing bar must overlap the bar it will replace.
(materials)
An abrasive material used for lapping.
(metallurgy)
A defect caused by folding and then rolling or forging a hot metal fin or corner onto a surface without welding. Also known as fold.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

lap

1. To overlap or partly cover one surface with another, as in shingling.
2. The length of the overlap, as the distance one tile extends over another.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

LAP

LISP Assembly Program. The assembly language embedded into early Lisp. LAP was also used by the Liar compiler for MIT Scheme and MACLISP.

[Sammet 1969, p. 597].
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

LAP

(1) (Link Access Protocol) The data link protocol in an AppleTalk network. Support for the various data link types were known as ELAP (Ethernet LAP), TLAP (Token Ring LAP), FLAP (FDDI LAP) and LLAP (LocalTalk LAP).

(2) (Link Access Procedure) An ITU family of data link protocols that are subsets of HDLC, which was derived from IBM's SDLC protocol. See HDLC.

LAP-B (LAP - Balanced)
Used in X.25 networks. Multilink Procedure (MLP) is a LAP-B extension that supports multiple, simultaneous links for increased throughput.

LAP-D (LAP for the D Channel)
Used for the D channel in ISDN networks defined in the ITU Q.920 and Q.921 recommendations. See ISDN.

LAP-M (LAP for Modems)
Used in V.42 modems. Although transmission between computer and modem is asynchronous, transmission between LAP-M modems is synchronous. See V.42.

LAP-X (LAP Half-Duplex)
Used in ship-to-shore transmission.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
Vettel, on softs and on a different strategy from his teammate that saw him go for a longer first stint, passed the Monegasque who had the hard compound just two laps from the end of the race.Hamilton won his eighth race of the season putting him firmly in control of the Championship.
24 But his inspired fightback, which saw him make his move on lap 67, owed much to the brave call from chief strategist James Vowles.
Both Aitken and Latifi tested the entire day, completing 103 and 100 laps, respectively.
Lap 58 of 58 -- Bottas wrestles back the fastest lap and is about to win the first Grand Prix of 2019.
Vettel closed up on Bottas with 10 laps remaining as a close finish for the leading four cars looked certain.
From the off in Saturday's race Zanotti, Winfield and Hedger scrapped for dominance, but on lap 5 Zanotti pulled off the track with a blown engine.
Following the restart, Gragson moved back in front and looked like he might win the first stage of 35 laps but Nemechek passed him to get the stage win.
Then, with the barrel held horizontally in a vise (preferably removed from the action), the abrasive coated lap is passed forth and back through the bore.
Timon Fish from Albuquerque, New Mexico, won the Men's Singlespeed race with 18 laps. Ann Sudoh won the Women's Singlespeed race with 13 laps.
The Blue Roo, Weihai-China and Caccia Engineering held the top three places before their long laps were taken into consideration.
It remained that way until lap 31 when Ricciardo's Red Bull team-mate Max Verstappen was forced to park his car after suffering a terminal engine failure.
Carlos Sainz Jr (Spain) Toro Rosso -- Ferrari 1 lap