rubicund
— Tillægsord
– Engelsk
~ inclined to a healthy reddish color often associated with outdoor life; "a ruddy complexion"; "Santa's rubicund cheeks"; "a fresh and sanguine complexion"
rubidium
— Navneord
– Dansk
~ grundstof nr. 37; sølvhvidt, blødt og let metal de ...
rubidium
— Navneord
– Engelsk
~ a soft silvery metallic element of the alkali metal group; burns in air and reacts violently in water; occurs in carnallite and lepidolite and pollucite