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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

chordate go
any animal of the phylum Chordata having a notochord or spinal column

vertebrate, craniate go
animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium

aquatic vertebrate go
animal living wholly or chiefly in or on water

jawless vertebrate, jawless fish, agnathan
eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms

noun.animal

8 Subcategories

ostracoderm go
extinct fish-like jawless vertebrate having a heavily armored body
heterostracan go
extinct jawless fish with the anterior part of the body covered with bony plates
osteostracan, cephalaspid go
extinct jawless fish of the Devonian with armored head
anaspid go
extinct small freshwater jawless fish usually having a heterocercal tail and an armored head
conodont go
small (2 inches long) extinct eellike fish with a finned tail and a notochord and having cone-shaped teeth containing cellular bone
cyclostome go
primitive aquatic vertebrate
lamprey, lamprey eel, lamper eel go
primitive eellike freshwater or anadromous cyclostome having round sucking mouth with a rasping tongue
hagfish, hag, slime eels go
eellike cyclostome having a tongue with horny teeth in a round mouth surrounded by eight tentacles