Term: deuterium: an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)
Broader: hydrogen atom: an atom of hydrogen | Unrelated: lemon oil: fragrant yellow oil obtained from the lemon peel
Broader: hydrogen atom: an atom of hydrogen | Unrelated: fly casting: casting an artificial fly as a lure
Broader: hydrogen atom: an atom of hydrogen | Unrelated: congo red: a red-brown azo dye especially as a chemical pH indicator (congo red is red in basic and blue in acidic solutions)
Broader: hydrogen atom: an atom of hydrogen | Unrelated: ukranian: a native or inhabitant of the Ukraine
Broader: hydrogen atom: an atom of hydrogen | Unrelated: cherrystone: a half-grown quahog
Broader: hydrogen atom: an atom of hydrogen | Unrelated: hit: a murder carried out by an underworld syndicate
Broader: hydrogen atom: an atom of hydrogen | Unrelated: cakewalk: an easy accomplishment
Broader: hydrogen atom: an atom of hydrogen | Unrelated: huddle: a disorganized and densely packed crowd
Broader: hydrogen atom: an atom of hydrogen | Unrelated: lilt: a jaunty rhythm in music
Broader: hydrogen atom: an atom of hydrogen | Unrelated: magnificence: the quality of being magnificent or splendid or grand