radium

US /ˈɹeɪ.di.əm/ UK /ˈɹeɪ.dɪ.əm/ See IPA manual

Freq #28683

Meanings

1

noun
A radioactive metal element (symbol Ra) that glows and was once used in medicine.

Marie Curie became famous for her discovery of radium.

Thesaurus

Word family

Derived forms eka-radiumnonradiumradateradiferousradioberadiumiseradiumizationradiumizeradiumizerradiumlikeradiumtherapyradon

Related forms radiation radioactive radioactivity radius ray

Appears in

Phrases (1)

See all

radium therapy
radiation treatment using radium as the source

Noun + noun

Etymology

Borrowed from French radium, from rad(ioactif) (“radioactive”) + -ium (suffix used to form the names of metallic elements).

radium French

View etymology graph ->

Topics

Science & Research

External links

# radium

**Type:** Word
**Level:** B2
**Part of speech:** noun
**IPA (US):** /ˈɹeɪ.di.əm/
**IPA (UK):** /ˈɹeɪ.dɪ.əm/
**Frequency rank:** 28683

## Meanings
1. A radioactive metal element (symbol Ra) that glows and was once used in medicine.

## Examples
- Marie Curie became famous for her discovery of radium.

## Derived Forms
- eka-radium
- nonradium
- radate
- radiferous
- radiobe
- radiumise
- radiumization
- radiumize
- radiumizer
- radiumlike
- radiumtherapy
- radon

## Related Forms
- radiation
- radioactive
- radioactivity
- radius
- ray

## Roots and Affixes
- Root: radium

## Etymology
Borrowed from French radium, from rad(ioactif) (“radioactive”) + -ium (suffix used to form the names of metallic elements).

## AI Etymology
Radium is borrowed from French radium, from rad(ioactif) (“radioactive”) + -ium (suffix used to form the names of metallic elements). Modern senses include a radioactive metal element (symbol Ra) that glows and was once used in medicine.. The wider word family includes derivatives such as eka-radium, nonradium, radate, radiferous, radiobe, and radiumise and related forms such as radiation, radioactive, radioactivity, and radius.

## Topics
- Science & Research

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