A non-radioactive isotope of hydrogen that contains a neutron in its nucleus in addition to the one proton normally seen in hydrogen. A deuterium atom is twice as heavy as normal hydrogen.

Isotope of hydrogen, with a nucleus containing one proton and one neutron, and an atomic mass number of 2.

An isotope of hydrogen that contains one neutron and one proton in its nucleus.

Hydrogen isotope with a nucleus containing a neutron and a proton resulting in double the weight of the nucleus of normal hydrogen, which contains only one proton. It is therefore known as “heavy“ hyd [..]

1933, coined by U.S. chemist Harold C. Urey, with Modern Latin ending + Greek deuterion, neuter of deuterios "having second place," from deuteros "next, second," according to some [..]

Isotope of hydrogen, having one proton and one neutron in the nucleus; heavy hydrogen. Deuterium is a nonradioactive form of hydrogen, occurring naturally with an abundance of about 0.016%. Deuterium [..]

An isotope of hydrogen with one proton and one neutron in the nucleus.

A special form of hydrogen (an isotope called “heavy hydrogen”) that has a neutron as well as a proton in its nucleus.

A special form of hydrogen (an isotope called “heavy hydrogen”) that has a neutron as well as a proton in its nucleus.

An isotope of hydrogen of mass 2 units; it is sometimes referred to as heavy hydrogen. It can be used in thermonuclear fusion reactions for the release of energy. Deuterium is extracted from water whi [..]

This is ionized deuterium in an IEC reactor. You can see the characteristic pink or reddish glow displayed by ionized deuterium." > This is ionized deuterium in an IEC reactor. You can see the characteristic pink or reddish glow displayed by ionized deuterium.  Benji9072 [..]

"Heavy hydrogen", a stable isotope having one proton and one neutron in the nucleus. It occurs in nature as 1 atom to 6500 atoms of normal hydrogen, (Hydrogen atoms contain one proto [..]

Also called 'heavy hydrogen', deuterium is a non-radioactive isotope of hydrogen having one proton and one neutron in the nucleus (that is, an atomic mass of two). It occurs in nature in the proportion of one atom to 6, 500 atoms of normal hydrogen. (Normal hydrogen atoms contain one proton and no neutrons).

a non-radioactive isotope of the hydrogen atom that contains a neutron in its nucleus in addition to the one proton normally seen in hydrogen. A deuterium atom is twice as heavy as normal hydrogen. Se [..]

(n) an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)

(n.) An isotope of hydrogen with a proton and a neutron in the nucleus (mass of 2 amu).

An isotope of hydrogen having one neutron and one proton with an atomic weight = 2.014.

An isotope of hydrogen, whose nucleus contains one proton and one neutron, double the weight of a standard hydrogen atom. Deuterium is used as fuel in fusion reactions. Dual-use Technology

Illustrated Glossary of Organic Chemistry Deuterium (2H; D): An isotope of hydrogen whose nucleus contains one proton and one neutron. Commonly abbreviated as D (for example in D2O), which should not [..]

Deuterium. The stable isotope of Hydrogen. It has one Neutron and one Proton in the nucleus.

Deuterium. The stable isotope of hydrogen. It has one neutron and one proton in the nucleus.

An isotope of hydrogen; also called heavy hydrogen (not radioactive). Its nucleus contains a proton and a neutron; hydrogen's nucleus contains only a proton. As a reference, the measured deuteriu [..]

Isotope of hydrogen with one proton and one neutron in the nucleus of each atom.

An isotope of hydrogen with one proton and one neutron in the nucleus having an atomic weight of 2.014.

A special form of hydrogen (an isotope called “heavy hydrogen”) that has a neutron as well as a proton in its nucleus.

deuterium (hydrogen isotope, chemical symbol: D)