subtopic

[ suhb-top-ik, suhb-top- ]
/ ˈsʌbˌtɒp ɪk, sʌbˈtɒp- /

noun

a topic that is included within another topic.

Origin of subtopic

sub- + topic

Words nearby subtopic

subtitle, subtle, subtlety, subtonic, subtopia, subtopic, subtorrid, subtotal, subtotal hysterectomy, subtract, subtraction