rubicund
— Adjective
– English
~ inclined to a healthy reddish color often associated with outdoor life; "a ruddy complexion"; "Santa's rubicund cheeks"; "a fresh and sanguine complexion"
rubidium
— Noun
– Danish
~ grundstof nr. 37; sølvhvidt, blødt og let metal de ...
rubidium
— Noun
– English
~ 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