[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/dictionaries/school/w/valid.html)

[home](https://md.mova.elamur.ai/free/en/) / [dictionaries](https://md.mova.elamur.ai/free/en/dictionaries/) / [The school dictionary](https://md.mova.elamur.ai/free/en/dictionaries/school/) / valid

[← V](https://md.mova.elamur.ai/free/en/dictionaries/school/V/)

# valid

«valid» in Mova's school dictionary: **officially acceptable and able to be used, for example…** — its meaning for a pupil, its sense in the lessons and examples.

### part of speech

adjective (valid, more valid)

### meaning for a pupil

1) Valid means officially acceptable and able to be used, for example because it has not run out: «a valid ticket», «a valid passport». [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valid/#m1)

2) Valid means sensible and based on good reasons: «a valid point», «a valid excuse». [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valid/#m2)

3) In maths and science a valid test or answer follows the rules correctly: «a valid conclusion». [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valid/#m3)

### sense in the lessons

In science lessons a «valid» or fair test changes only one variable, so the results really answer the question. In maths and reasoning, a valid answer must fit all the conditions. In everyday life tickets, coupons and passports are valid until a certain time. In discussions, teachers say «that's a valid point» to respect an idea. Phrases: «valid for», «valid until», «a valid reason», «a valid point».

### examples

- Your bus ticket is valid for one day. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valid/#x1)
- That's a valid point. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valid/#x2)
- Is my passport still valid? [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valid/#x3)
- Forgetting isn't a valid excuse. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valid/#x4)
- To make the test valid, change only one thing. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valid/#x5)
- The coupon is no longer valid. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valid/#x6)
- Check your answer is valid in the problem. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/V/valid/#x7)

### note

Opposite: invalid. Noun: validity. Verb: validate. In maths, an answer like «3.5 children» is not valid when counting people.

### Trees and pragmatics

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