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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

object, physical object go
a tangible and visible entity

whole, unit go
an assemblage of parts that is regarded as a single entity

living thing, animate thing go
a living (or once living) entity

organism, being go
a living thing that has (or can develop) the ability to act or function independently

animal, animate being, beast, brute, creature, fauna go
a living organism characterized by voluntary movement

invertebrate go
any animal lacking a backbone or notochord

arthropod
invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin

noun.animal

17 Subcategories

trilobite go
an extinct arthropod that was abundant in Paleozoic times
arachnid, arachnoid go
air-breathing arthropods characterized by simple eyes and four pairs of legs
myriapod go
general term for any terrestrial arthropod having an elongated body composed of many similar segments: e.g. centipedes and millipedes
garden centipede, garden symphilid, symphilid, Scutigerella immaculata go
minute arthropod often infesting the underground parts of truck-garden and greenhouse crops
tardigrade go
an arthropod of the division Tardigrada
centipede go
chiefly nocturnal predacious arthropod having a flattened body of 15 to 173 segments each with a pair of legs, the foremost pair being modified as prehensors
millipede, millepede, milliped go
any of numerous herbivorous nonpoisonous arthropods having a cylindrical body of 20 to 100 or more segments most with two pairs of legs
sea spider, pycnogonid go
any of various small spiderlike marine arthropods having small thin bodies and long slender legs
Merostomata, class Merostomata go
used in some classifications
horseshoe crab, king crab, Limulus polyphemus, Xiphosurus polyphemus go
large marine arthropod of the Atlantic coast of North America having a domed carapace that is shaped like a horseshoe and a stiff pointed tail
Asian horseshoe crab go
horseshoe crab of the coast of eastern Asia
eurypterid go
large extinct scorpion-like arthropod considered related to horseshoe crabs
tongue worm, pentastomid go
wormlike arthropod having two pairs of hooks at the sides of the mouth
crustacean go
any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton
onychophoran, velvet worm, peripatus go
any of numerous velvety-skinned wormlike carnivorous animals common in tropical forests having characteristics of both arthropods and annelid worms
insect go
small air-breathing arthropod
instar go
an insect or other arthropod between molts