Definition of arthropod
: any of a phylum (Arthropoda) of invertebrate animals (such as insects, arachnids, and crustaceans) that have a segmented body and jointed appendages, a usually chitinous exoskeleton molted at intervals, and a dorsal anterior brain connected to a ventral chain of ganglia
arthropodanplay \är-ˈthrä-pə-dən\ adjective
Recent Examples of arthropod from the Web
Instead, there were primitive worms and arthropods, some species of jellyfish and sponges, and a smattering of multicellular microscopic life.
In all, the team collected 129,494 arthropods, compared with only a few thousand in most previous studies, then spent the next 8 years identifying and sorting the bugs.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'arthropod'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of arthropod
New Latin Arthropoda, from arthr- + Greek pod-, pous foot — more at foot
First Known Use: 1857
ARTHROPOD Defined for Kids
Definition of arthropod for Students
: any of a large group of animals (as crabs, insects, and spiders) with jointed limbs and a body made up of segments
Seen and Heard
What made you want to look up arthropod? Please tell us where you read or heard it (including the quote, if possible).