infraorder
(redirected from Order (biology))Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to Order (biology): superorder
in·fra·or·der
(ĭn′frə-ôr′dər)n.
A taxonomic category of related organisms ranking below a suborder and above a family or superfamily.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.