English dictionary, thesaurus, translations & etymology
FreeDict.com
noun

deuterium

dyoo-TEER-reerm
Quiz me More like this

Deuterium (noun) means a heavier form of hydrogen whose atoms contain a neutron as well as a proton. Example: “Deuterium is used to make heavy water for nuclear reactors.”

noun
1
A heavier form of hydrogen whose atoms contain a neutron as well as a proton.
"Heavy water is "heavy" because it contains deuterium."
"Deuterium is used to make heavy water for nuclear reactors."

How to use deuterium

Learner’s notes

In plain EnglishA heavier variant of hydrogen used in nuclear science.

Easily confused with
Common pairings
deuterium oxide heavy water
Vocabulary Flow
Build your vocabulary from words like deuterium.
Vocabulary Flow serves the next word, and the next — meaning, pronunciation and an example each time. Practice at your level, or learn English in your own language.
Start vocabulary practice

Word forms

Plural
deuteriums
Test yourself on “deuterium” A quick quiz — meaning, synonyms & usage →

Fill the gap

Can you complete this real example?

_____ is used to make heavy water for nuclear reactors.

Etymology

Coined by chemist Harold Urey from Greek deuteros ("second"), plus -ium.

Origin: Greek

heavy hydrogen

Rhymes for deuterium

See all rhymes for deuterium →

Frequently asked questions

What does “deuterium” mean?
The word “deuterium” means a heavier form of hydrogen whose atoms contain a neutron as well as a proton. In plain terms, a heavier variant of hydrogen used in nuclear science.
How do you pronounce “deuterium”?
“Deuterium” is pronounced dyoo-TEER-reerm (/djuːˈtɪɹi.əm/ in IPA).
How do you use “deuterium” in a sentence?
Here is “deuterium” used in a sentence: “Deuterium is used to make heavy water for nuclear reactors.”
What part of speech is “deuterium”?
“Deuterium” is a noun.
Where does the word “deuterium” come from?
The word “deuterium” comes from Greek. Coined by chemist Harold Urey from Greek deuteros ("second"), plus -ium.