analog

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analog

 [an´ah-log]
pertaining to an electronic system in which a continuous electrical signal is used to carry nonelectrical information (such as sound), which is represented by variations in the voltage or current that are in direct correlation to the information carried. See also digital.

analog

or

analogue

(ăn′ə-lôg′, -lŏg′)
n.
1. Biology An organ or structure that is similar in function to one in another kind of organism but is of dissimilar evolutionary origin.
2. Chemistry A structural derivative of a parent compound that often differs from it by a single element.
adj.
Of, relating to, or being a device in which data or a signal is represented by continuously variable, measurable, physical quantities, such as length, width, voltage, or pressure.

analogue

Chemistry
noun A compound that is structurally similar to another.

Imaging
adjective An MRI term referring to or having a continuous range of values.

Informatics
adjective Referring to data in the form of continuously variable (non-discrete) physical quantities, the mode in which most lab instruments produce information, where data is generated as non-discrete signals, as in AC or DC current, voltage changes or pulse amplitudes.

Molecular biology
adjective Referring to a molecule that is structurally and functionally related to another molecule.

noun A molecule that is structurally and functionally related to another molecule.    

Pharmacology
noun A therapeutic agent with structural or chemical similarity to, or which mimics the effects of, another agent, but which differs chemically.

an·a·logue

, analog (an'ă-lawg)
1. One of two organs or parts in different species of animals or plants that differ in structure or development but are similar in function.
2. A compound that resembles another in structure but is not necessarily an isomer; analogues are often used to block enzymatic reactions by combining with enzymes.
[G. analogos, proportionate]
References in periodicals archive ?
Modems are for analog lines. When you use digital lines you don't use modems.
This has allowed Stone & Thomas to replace a multipoint network based on multiple analog lines, with a single 56- or 64-kb/s digital circuit for each store.
Leased analog lines offer improved reliability and guarantee shortest restoration time in the event of an equipment failure.
The business eliminated its expensive ISDN line and reduced its use of analog lines for local calls, which lowered telephone bills.
Likewise, analog lines serving digital IVRs inquire the insertion of signaling, bits.
The cost of an ISDN line varies widely nationwide, but is usually lower than or equal to the price of two analog lines. ISDN can also be used for voice and data simultaneously, so you can make a phone call or receive a fax while files download.
ip telephony will rely on this cabling, some analog lines can also be deployed to meet specific needs.
BIKE MANUFACTURER RIDES OUT PROBLEMS WITH ANALOG LINES
Kaiser Permanente's Southern California region trimmed cost of a PBX cutover from $400,000 to $100,000 by setting up a local voice loop over a digital fiber optic T3 link instead of using analog lines.
There also are a series of 56-kb/s DDS (Dataphone Digital Service) lines in the network and a few 9.6-kb/s analog lines. Twenty-one smaller campuses connect to the backbone network.