cnidarian

Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.

cni·dar·i·an

(nī-dâr′ē-ən)

Any of various invertebrate animals of the phylum Cnidaria, characterized by a radially symmetrical body with a saclike internal cavity and stinging nematocysts, and including the jellyfishes, hydras, sea anemones, and corals.

[New Latin Cnīdāria, phylum name, from Greek knīdē, sea nettle.]

cni·dar′i·an adj.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

cnidarian

(naɪˈdɛərɪən; knaɪ-)

(Animals) any invertebrate of the phylum Cnidaria, which comprises the coelenterates

adj

(Animals) of, relating to, or belonging to the Cnidaria

[C20: from New Latin Cnidaria, from Greek knidē nettle]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

cni•dar•i•an

(naɪˈdɛər i ən)

n.

1. any radially symmetric invertebrate of the phylum Cnidaria, including the hydras, jellyfishes, sea anemones, and corals, characterized by stinging cells and a saclike digestive cavity with a single opening surrounded by tentacles. Compare coelenterate.

adj.

2. of or pertaining to the cnidarians.

[1930–35; < New Latin Cnidari(a) (see cnida, -aria) + -an¹]

cni·dar·i·an

(nī-dâr′ē-ən)

Any of various invertebrate animals that have a body with radial symmetry, tentacles, and a sac-like internal cavity. They have a single opening for ingesting food and eliminating wastes. Cnidarians include the jellyfishes, hydras, sea anemones, and corals. Also called coelenterate.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

ThesaurusAntonymsRelated WordsSynonymsLegend:

Switch to new thesaurus

Noun

cnidarian - radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms

coelenterate

coelenteron - the saclike body cavity of a coelenterate

invertebrate - any animal lacking a backbone or notochord; the term is not used as a scientific classification

Cnidaria, Coelenterata, phylum Cnidaria, phylum Coelenterata - hydras; polyps; jellyfishes; sea anemones; corals

polyp - one of two forms that coelenterates take (e.g. a hydra or coral): usually sedentary with a hollow cylindrical body usually with a ring of tentacles around the mouth; "in some species of coelenterate, polyps are a phase in the life cycle that alternates with a medusoid phase"

medusan, medusoid, medusa - one of two forms that coelenterates take: it is the free-swimming sexual phase in the life cycle of a coelenterate; in this phase it has a gelatinous umbrella-shaped body and tentacles

jellyfish - any of numerous usually marine and free-swimming coelenterates that constitute the sexually reproductive forms of hydrozoans and scyphozoans

scyphozoan - any of various usually free-swimming marine coelenterates having a gelatinous medusoid stage as the dominant phase of its life cycle

hydroid, hydrozoan - colonial coelenterates having the polyp phase dominant

actinozoan, anthozoan - sessile marine coelenterates including solitary and colonial polyps; the medusoid phase is entirely suppressed

Translations

žahavec

cnidario

References in periodicals archive ?

Scientists know little about cnidarian launch mechanisms.

What tells anemones to kill their enemies?

When the top1 gene hit of ORF was similar to cnidarian or Syinbiodinium sequences, the ORF was assigned as the host or symbiont-derived sequence, respectively.

Identification of genes for synthesis of the blue pigment, biliverdin IX[alpha], in the blue coral Heliopora coerulea

Together, these results showed that high temperature, independent of pC[O.sub.2] level, was a primary cause of coral bleaching, and suggest that variations in bleaching among coral colonies (Edmunds, 1994; Baird et al., 2009) are attributed to intraspecific genetic variation in cnidarian hosts.

Effects of Temperature and pC[Osub.2] on population regulation of symbiodinium spp. in a tropical reef coral

Acceptable symbiont cell size differs among cnidarian species and may limit symbiont diversity.

Symbiont Identity Influences Patterns of Symbiosis Establishment, Host Growth, and Asexual Reproduction in a Model Cnidarian-Dinoflagellate Symbiosis

Cellular mechanisms of cnidarian bleaching: stress causes the collapse of symbiosis.

Differential ROS Generation in Response to Stress in Symbiodinium spp

However, some of the most investigated organisms in regard to regeneration are the planarians and the cnidarian polyps, which both have impressive regenerative powers (Salo, 2006; Gold and Jacobs, 2013).

Regeneration of the Rhopalium and the Rhopalial Nervous System in the Box Jellyfish Tripedalia cystophora

Relative contributions of various cellular mechanisms to loss of algae during cnidarian bleaching.

Natural Variation in Responses to Acute Heat and Cold Stress in a Sea Anemone Model System for Coral Bleaching

Cnidarian prey of the snails Coralliophila abbreviata and C.

Note on density and predation rate of Coralliophila abbreviata and Coralliophila caribaea on juvenile colonies of Acropora palmata in a deteriorated coral reef of Cayo Sombrero, Morrocoy National Park, Venezuela/Nota Sobre la densidad y tasa de depredacion de Coralliophila abbreviata y Coralliophila caribaea sobre colonias jovenes de Acropora palmata en un arrecife deteriorado de Cayo Sombrero, Parque Nacional Morrocoy, Venezuela

Jellyfish species (of the cnidarian subphylum Medusozoa) typically possess a benthic, sessile stage (polyp) that reproduces asexually by budding new polyps or medusae, the latter of which represent the sexually reproductive stage of the textbook medusozoan life cycle.

Box jellyfish Alatina alata has a circumtropical distribution

High-resolution electron microscopy revealed for the first time in cnidarian collagen the interwoven, three-dimensional arrangement of the fibrils that comprise the fibers.

Octocoral Sarcophyton auritum Verseveldt & Benayahu, 1978: Microanatomy and presence of collagen fibers

Some cells of the cnidarian mesoglea historically have been reported to include putative immunocytes (Chapman, 1974; reviewed in Bigger and Hildemann, 1982) in the form of "granular amoebocytes." Because these immunocytes have been described as phagocytic, they should be involved in any foreign body response and wound healing, and thus carry antimicrobial substances (enzymes, peptides, and oxidative burst capacity).

Identification of unstimulated constitutive immunocytes, by enzyme histochemistry, in the coenenchyme of the octocoral Swiftia exserta

culture derived from the cnidarian host corallimorph Rhodactis [Heteractis] lucida, and Cytophaga sp.

Induction of larval settlement in the reef coral porites astreoides by a cultivated marine roseobacter strain

Full browser ?

CITE

Site: Follow: Share:

Open / Close