Any of a large group of one-celled organisms (called protists) that live in water or as parasites. Many protozoans move about by means of appendages known as cilia or flagella. Protozoans include the amoebas, flagellates, foraminiferans, and ciliates. Their traditional classification as the subkingdom Protozoa is still used for convenience, but it is now known that protozoans represent several evolutionarily distinct groups.
The spirally threaded shaft of a worm gear.
Any of numerous usually free-swimming marine cnidarians of the class Scyphozoa, characteristically having a gelatinous, tentacled, often bell-shaped medusa stage as the dominant phase of its life cycle.
The definition of an insect is a bug- a small anthropoid with six legs and, sometimes, wings.
(--- Slang) Infestation by crab lice.
Any of various hard-shell, usually edible, bivalve mollusks, some of which live in the shallows of the sea, others in fresh water
Find another word for invertebrates. In this page you can discover 7 synonyms, antonyms, idiomatic expressions, and related words for invertebrates, like: protozoa, worms, shellfishes, jellyfishes, insects, crabs and clams.