run-time system - meaning and definition. What is run-time system
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What (who) is run-time system - definition

SYSTEM THAT PROVIDES BEHAVIOR NEEDED BY RUNNING CODE; PRIMARILY IMPLEMENTS PORTIONS OF AN EXECUTION MODEL
Run-time environment; Runtime engine; Runtime environment; Run time environment; Run time system; Running environment; Run-time engine; Runtime environments; Run-time system

run-time system         
<programming> (RTS, run-time support, run-time) Library code and processes which support software written in a particular language running on a particular platform. The RTS typically deals with details of the interface between the program and the operating system such as system calls, program start-up and termination, and memory management. (1999-07-26)
Runtime system         
In computer programming, a runtime system or runtime environment is a sub-system that exists both in the computer where a program is created, as well as in the computers where the program is intended to be run. The name comes from the compile time and runtime division from compiled languages, which similarly distinguishes the computer processes involved in the creation of a program (compilation) and its execution in the target machine (the run time).
run-time environment         
<operating system> A collection of subroutines and environment variables that provide commonly used functions and data for a program while it is running. Compare run-time support. (1995-03-22)

Wikipedia

Runtime system

In computer programming, a runtime system or runtime environment is a sub-system that exists both in the computer where a program is created, as well as in the computers where the program is intended to be run. The name comes from the compile time and runtime division from compiled languages, which similarly distinguishes the computer processes involved in the creation of a program (compilation) and its execution in the target machine (the run time).

Most programming languages have some form of runtime system that provides an environment in which programs run. This environment may address a number of issues including the management of application memory, how the program accesses variables, mechanisms for passing parameters between procedures, interfacing with the operating system, and otherwise. The compiler makes assumptions depending on the specific runtime system to generate correct code. Typically the runtime system will have some responsibility for setting up and managing the stack and heap, and may include features such as garbage collection, threads or other dynamic features built into the language.