Basis | Mean of basis in English Dictionary

/ˈbeɪsəs/

• Noun
• something (such as an idea or set of ideas) from which another thing develops or can develop
1. This principle forms the basis [=base, foundation] of the country's economic policies and will provide a firm basis for future development.
2. The actor's letters form the basis of the biography. [=the biography is based on the actor's letters; the most important information in the biography comes from the actor's letters]
3. These stories have very little basis [=foundation] in fact/reality. [=these stories are not based on or supported by facts/reality]
• a reason for doing something
1. The judge ruled that there is no legal basis [=ground] for a new trial.
2. The latest news at least provides some basis for hope. [=some reason to hope]
3. On what basis were the students chosen/selected? [=how were the students chosen/selected?; what was considered when the students were chosen/selected?]
4. Students were chosen/selected on the basis of [=according to] their grades and test scores.
5. Our decisions are made on the basis of the available information. [=we base our decisions on the available information]
6. The company does not hire employees on the basis of their race, sex, age, or religion.
• a fixed pattern or system for doing something
1. He visits his grandmother on a regular basis. [=regularly]
2. The company changes its Web site on a daily/weekly basis. [=every day/week]
3. changes that occur on an hourly basis
4. They hired her on a trial/temporary basis.
5. People are seated on a first-come, first-served basis. [=the people who arrive first are given seats first]