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any invertebrate of the phylum Arthropoda, having a segmented body, jointed limbs, and usually a chitinous shell that undergoes moltings, including the insects, spiders and other arachnids, crustaceans, and myriapods.
Also, arthropodal
[ahr-throp-uh-dl] /ɑrˈθrɒp ə dl/ (Show IPA), arthropodan
[ahr-throp-uh-dn] /ɑrˈθrɒp ə dn/ (Show IPA), arthropodous
[ahr-throp-uh-duh s] /ɑrˈθrɒp ə dəs/ (Show IPA). belonging or pertaining to the Arthropoda.
Historical Examples

The corm becomes the seat of a development of a special visual organ, the arthropod eye (as opposed to the Chaetopod eye).
Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 Various

Florida pocket-gopher burrows and their arthropod inhabitants.
The Biotic Associations of Cockroaches Louis M. Roth

In other words, without the arthropod host the disease-producing organism cannot complete its development.
Handbook of Medical Entomology William Albert Riley

An ten’ na, a segmented sensory appendage on the head of an arthropod.
A Guide for the Study of Animals Worrallo Whitney

Intertergal, in-tėr-tėr′gal, adj. situated between the terga or tergites of an arthropod.
Chambers’s Twentieth Century Dictionary (part 2 of 4: E-M) Various

Two distinct forms of the arthropod eye are observed—the monomeniscous (simple) and the polymeniscous (compound).
Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 Various

Audouin gave the detailed demonstration of this by his accurate and minute determination of the pieces of the arthropod skeleton.
Form and Function E. S. (Edward Stuart) Russell

Turn the arthropod on its back and the relative positions of the systems of organs are the same as in the Vertebrate.
Form and Function E. S. (Edward Stuart) Russell

We now have to consider the cases in which the arthropod acts as the essential host of a pathogenic organism.
Handbook of Medical Entomology William Albert Riley

Thus the nervous system is dorsal in the Vertebrate, ventral in the arthropod.
Form and Function E. S. (Edward Stuart) Russell

noun
any invertebrate of the phylum Arthropoda, having jointed limbs, a segmented body, and an exoskeleton made of chitin. The group includes the crustaceans, insects, arachnids, and centipedes
n.

1877, from Modern Latin Arthropoda, literally “those with jointed feet,” biological classification of the phylum of segmented, legged invertebrates; see Arthropoda.

arthropod ar·thro·pod (är’thrə-pŏd’)
n.
Any of numerous invertebrate animals of the phylum Arthropoda, including insects, crustaceans, arachnids, and myriapods.
arthropod
(är’thrə-pŏd’)
Any of numerous invertebrate animals of the phylum Arthopoda, characterized by an exoskeleton made of chitin and a segmented body with pairs of jointed appendages. Arthropods share many features with annelids and may have evolved from them in the Precambrian Era. Arthropods include the insects, crustaceans, arachnids, myriapods, and extinct trilobites, and are the largest phylum in the animal kingdom.