Definitions
from The Century Dictionary.
- Fourfold: applied to a system of telegraphy in which four messages may be transmitted simultaneously over one wire.
- noun An instrument by means of which four messages may be transmitted simultaneously over one wire.
- noun Sometimes abbreviated quad.
- To make quadruplex; arrange for fourfold transmission.
from the GNU version of the Collaborative International Dictionary of English.
- adjective Fourfold; folded or doubled twice.
- adjective (Electric Telegraph) a system by which four messages, two in each direction, may be sent simultaneously over the wire.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective Having
four components . - adjective of or relating to a system in
telegraphy by which four messages can be sent on onewire simultaneously . - noun A quadruplex
system
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adjective having four units or components
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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The quadruplex was the tempting goal toward which Edison now constantly turned, and after more than a year's strenuous work he filed a number of applications for patents in the late summer of 1874.
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Thus by combining instruments that respond only to variation in the strength of current from the distant station, with instruments that respond only to the change in the direction of current from the distant station, and by grouping a pair of these at each end of the line, the quadruplex is the result.
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Thus by combining instruments that respond only to variation in the strength of current from the distant station, with instruments that respond only to the change in the direction of current from the distant station, and by grouping a pair of these at each end of the line, the quadruplex is the result.
Edison, His Life and Inventions Frank Lewis Dyer 1905
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The quadruplex was the tempting goal toward which Edison now constantly turned, and after more than a year's strenuous work he filed a number of applications for patents in the late summer of 1874.
Edison, His Life and Inventions Frank Lewis Dyer 1905
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Note 32: The edition I will be using is that of 1624, Bibliotheca mundi Vincentii Burgundi … Speculum quadruplex, naturale, doctrinale, morale, historiale (Douai, Balthazar Bellerus).
A Tender Age: Cultural Anxieties over the Child in the Twelfth and Thirteenth Centuries 2005
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Configured as a quadruplex, the apartment includes three bedrooms, four and a half bathrooms, 13-foot ceilings, a media room, library and private terrace.
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Configured as a quadruplex, the apartment includes three bedrooms, four and a half bathrooms, 13-foot ceilings, a media room, library and private terrace.
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Configured as a quadruplex, the apartment includes three bedrooms, four and a half bathrooms, 13-foot ceilings, a media room, library and private terrace.
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At East 64th Street, Mr. Mottola's lavish quadruplex sits on one of the most exclusive-and expensive-blocks in Manhattan.
Ford Redux 2003
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While the quadruplex apartment was rumored to have sold for more than $20 million, city records show that in September, Mr. Mottola sold his 11,000-square-foot condo for $13.8 million-well below its original stratospheric asking price of $34 million.
Ford Redux 2003
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