Noun
A microscopic system, especially a system using microscopic electromechanical components.
The system of groups and institutions with the most immediate and direct impact on an individual's development.
Source: en.wiktionary.orgMacrosystem refers to the cultural values, customs and laws of society. citation The microsystem is the immediate environment surrounding and influencing the individual (example: school or the home setting). Source: Internet
Mesosystem is how relationships connect to the microsystem. Source: Internet
The four systems are microsystem, mesosystem, exosystem, and macrosystem. Source: Internet