Definition of suborder
: a subdivision of an order <a soil suborder>; especially : a taxonomic category ranking between an order and a family
First Known Use of suborder
Medical Definition of suborder
: a category in biological classification ranking below an order and above a family
Learn More about suborder
Seen and Heard
What made you want to look up suborder? Please tell us where you read or heard it (including the quote, if possible).