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# effectiveness

«effectiveness» in Mova's school dictionary: **how well something works or does the job it is meant to do** — its meaning for a pupil, its sense in the lessons and examples.

### part of speech

noun (effectiveness — uncountable); adjective effective

### meaning for a pupil

1) Effectiveness is how well something works or does the job it is meant to do. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/effectiveness/#m1)

2) In science tests, effectiveness is measured by comparing results, for example how well a soap removes dirt. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/effectiveness/#m2)

### sense in the lessons

Science and fair tests (effectiveness of insulators, sun cream, magnets), health (effectiveness of a vaccine or medicine), and in reviewing your own work. Phrases: the effectiveness of, test the effectiveness, improve effectiveness.

### examples

- We tested the effectiveness of three materials at keeping ice cold. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/effectiveness/#x1)
- The effectiveness of the plan surprised everyone. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/effectiveness/#x2)
- Doctors check the effectiveness of medicines in careful trials. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/effectiveness/#x3)
- The coach judged the effectiveness of our new tactic. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/effectiveness/#x4)
- Washing hands with soap has great effectiveness against germs. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/effectiveness/#x5)
- The survey measured the effectiveness of the new reading club. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/effectiveness/#x6)
- A few words unknown to the reader only add effectiveness and local colour to a narrative, as Mr. Kipling well knows. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/effectiveness/#x7)

### note

Uncountable. Effective (works well) vs efficient (works without waste) — different. Affect/effect confusion: effect is the noun, so effectiveness has e. In maths, effectiveness can be shown as a percentage, like «90% effective».

### Trees and pragmatics

[Every meaning and example of «effectiveness» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/effectiveness/), each sentence with its dependency tree and frames.