adel-
combining form 
or adelo-
Etymology: New Latin, from Greek adēl, adēlo- unseen, from adēlos, from a- a- (II) + dēlos visible, evident; akin to Old English tǣtan to gladden, Old High German zeiz dear, Old Norse teitr glad, Sanskrit dīdeti he shines, Latin dies day — more at deity 
 : concealed : not apparent 
< Adelaster >
< adelopod >
or adelo-
< Adelaster >
< adelopod >