Crossword Clue:

Of relating to or along a tangent

AnswerCrossword Clue
FILIALRelating to a son or daughter
POSTALRelating to a prestamped card or envelope
ARCLead-in to sine, cosine, or tangent
CAESAREANRelating to Julius or Augustus
TEXTURALRelating to roughness or smoothness, say