What does crustacea mean?

Definitions for crustacea
crus·tacea

This dictionary definitions page includes all the possible meanings, example usage and translations of the word crustacea.

Princeton's WordNet

  1. Crustacea, class Crustaceanoun

    class of mandibulate arthropods including: lobsters; crabs; shrimps; woodlice; barnacles; decapods; water fleas

Wikipedia

  1. crustacea

    Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can be treated as a subphylum under the clade Mandibulata. It is now well accepted that the hexapods (such as insects) emerged deep in the Crustacean group, with the completed group referred to as Pancrustacea. Some crustaceans (Remipedia, Cephalocarida, Branchiopoda) are more closely related to insects and the other hexapods than they are to certain other crustaceans.The 67,000 described species range in size from Stygotantulus stocki at 0.1 mm (0.004 in), to the Japanese spider crab with a leg span of up to 3.8 m (12.5 ft) and a mass of 20 kg (44 lb). Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates, by the possession of biramous (two-parted) limbs, and by their larval forms, such as the nauplius stage of branchiopods and copepods. Most crustaceans are free-living aquatic animals, but some are terrestrial (e.g. woodlice, sandhoppers), some are parasitic (e.g. Rhizocephala, fish lice, tongue worms) and some are sessile (e.g. barnacles). The group has an extensive fossil record, reaching back to the Cambrian. More than 7.9 million tons of crustaceans per year are harvested by fishery or farming for human consumption, consisting mostly of shrimp and prawns. Krill and copepods are not as widely fished, but may be the animals with the greatest biomass on the planet, and form a vital part of the food chain. The scientific study of crustaceans is known as carcinology (alternatively, malacostracology, crustaceology or crustalogy), and a scientist who works in carcinology is a carcinologist.

ChatGPT

  1. crustacea

    Crustacea is a large subphylum of arthropods, which includes over 67,000 classified species such as crabs, lobsters, shrimps, barnacles, woodlice, and many others. They are distinguished by having bodies that are generally divided into segments, two pairs of antennae, and a hard protective exoskeleton which is periodically shed and renewed. Most crustaceans are aquatic, living in either fresh or marine water, but some like woodlice are terrestrial. They play vital roles in aquatic ecosystems, acting as scavengers, predators, and prey species.

Webster Dictionary

  1. Crustacea

    one of the classes of the arthropods, including lobsters and crabs; -- so called from the crustlike shell with which they are covered

  2. Etymology: [Neut. pl. of NL. crustaceus pert. to the crust or shell, from L. crusta the hard surfsce of a body, rind, shell.]

Chambers 20th Century Dictionary

  1. Crustacea

    krus-tā′shi-a, n.pl. a large class of Arthropod animals, almost all aquatic, including crabs, lobsters, shrimps, sand-hoppers, wood-lice, water-fleas, barnacles, acorn-shells, &c.—n. Crustā′cean, one of the crustacea.—adj. Crustaceolog′ical.—ns. Crustaceol′ogist; Crustaceol′ogy, the science which treats of the crustacea.—adjs. Crustā′ceous, Crustā′cean, pertaining to the crustacea, or shellfish.

U.S. National Library of Medicine

  1. Crustacea

    A large subphylum of mostly marine ARTHROPODS containing over 42,000 species. They include familiar arthropods such as lobsters (NEPHROPIDAE), crabs (BRACHYURA), shrimp (PENAEIDAE), and barnacles (THORACICA).

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Numerology

  1. Chaldean Numerology

    The numerical value of crustacea in Chaldean Numerology is: 1

  2. Pythagorean Numerology

    The numerical value of crustacea in Pythagorean Numerology is: 1

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"crustacea." Definitions.net. STANDS4 LLC, 2024. Web. 19 Nov. 2024. <https://www.definitions.net/definition/crustacea>.

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