- the lowest part or edge of something, especially the part on which it rests or is supported；the part of a column between the shaft and pedestal or pavement.
- use (something specified) as the foundation or starting point for something；situate at a specified place as the centre of operations
verb: base, 3rd person present: bases, gerund or present participle: basing, past tense: based, past participle: based
noun: base, plural noun: bases
- 1. the lowest part or edge of something, especially the part on which it rests or is supported she sat down at the base of a tree 同義詞 反義詞
- ▪ the part of a column between the shaft and pedestal or pavement.
- ▪ the end at which a part or organ is attached to the trunk or main part a shoot is produced at the base of the stem
- ▪ a line or surface on which a figure is regarded as standing the base of the triangle
- ▪ a known line used as a geometrical base for trigonometry.
- ▪ the lowest part of a shield.
- 2. a conceptual structure or entity on which something draws or depends the town's economic base collapsed
- ▪ a foundation or starting point for further work she uses existing data as the base for the study 同義詞
- ▪ a group of people regarded as supporting an organization, for example by buying its products a customer base
- 3. a place used as a centre of operations by the armed forces or others; a headquarters he headed back to base 同義詞
- ▪ the main place where a person works or stays she makes the studio her base your hotel is a good base from which to explore
- 4. a main or important element or ingredient to which other things are added soaps with a vegetable oil base 同義詞
- ▪ a substance into which a pigment is mixed to form paint, such as water, oil, or powdered aluminium hydroxide.
- ▪ a substance used as a foundation for make-up her make-up artist works with base, eye make-up, and lipstick
- 5. a substance capable of reacting with an acid to form a salt and water, or (more broadly) of accepting or neutralizing hydrogen ions.
- ▪ a purine or pyrimidine group in a nucleotide or nucleic acid.
- 6. the middle part of a bipolar transistor, separating the emitter from the collector.
- 7. the root or stem of a word or a derivative.
- ▪ the uninflected form of a verb.
- 8. a number used as the basis of a numeration scale.
- ▪ a number in terms of which other numbers are expressed as logarithms.
- 9. each of the four stations that must be reached in turn to score a run.
- 1. use (something specified) as the foundation or starting point for something the film is based on a novel by Pat Conroy entitlement will be based on income 同義詞
- 2. situate at a specified place as the centre of operations the Science Policy Review Unit is based at the University of Sussex a London-based band 同義詞