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 (vŏl′vŏks′, vôl′-)
Any of various one-celled flagellate freshwater green algae of the genus Volvox that form hollow mucilaginous spherical colonies of several hundred cells.

[New Latin Volvox, genus name, from Latin volvere, to roll; see wel- in Indo-European roots.]


(Microbiology) any freshwater flagellate protozoan of the genus Volvox, occurring in colonies in the form of hollow multicellular spheres
[C18: from New Latin, from Latin volvere to roll]


(ˈvɒl vɒks)

any colonial freshwater green algae of the genus Volvox, forming a hollow sphere of flagellated cells.
[1790–1800; < New Latin, = Latin volv(ere) to turn, roll + -ōx (as in ferōx)]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.volvox - type genus of the VolvocaceaeVolvox - type genus of the Volvocaceae; minute pale green flagellates occurring in tiny spherical colonies; minute flagella rotate the colony about an axis
protoctist genus - any genus of Protoctista
family Volvocaceae, Volvocaceae - unicellular or colonial biflagellate free-swimming flagellates
References in periodicals archive ?
The processes observed in the Volvox embryo are similar to the process of gastrulation in animal embryos--which biologist Lewis Wolpert calls "the most important event in your life." During gastrulation, the embryo folds inwards into a cup-like shape, forming the primary germ layers that give rise to all the organs in the body.
Volvox Group, which is based in Gildersome Leeds, is a company with expertise in managing automotive, lighting and industrial consumable products.
Among Chlorophyceae, Volvox were represented by 80 and 10 individuals 5 ml-1 in the treated and reference ponds, respectively.
Solazyme has filed a patent application for Chlamydomonas, Chlorella, Volvox, Phaeodactylum, Dunaliella and Thalassiosira algae that have been genetically engineered to maximize triglyceride production.
2 Chlorophyceae: Volvox, Ulothrix, Stichococcous, Chaetophora, Radiotillum, Microspora, Stigeoclonium, Protococcus, Oedogonium, Pediastrum, Rhizoclonium, Ankistrodesmus, Sclenastrum, Kirchnorilla, Mougeotiopsis, Trachelomonas and Euglena.
The company is deploying a fleet of more than 17 specialty vessels of which the Volvox Terranova HAM 318 trailing suction hopper dredger is the largest.
Size of fish Food item Small (n = 60) Medium (n = 56) Plant material 15.6 11.9 Diatoms 45.3 66.1 Filamentous algae 28.1 44.1 Protozoa (Volvox) 8.3 9.3 Insects 98.4 78.0 Diptera 45.3 33.9 Tricoptera 1.6 Odonata Unidentified 51.6 44.1 Cladocera 53.1 45.8 Copepoda 12.5 11.9 Ostracoda 9.4 8.5 Rotifera 34.4 54.2 Ectoprocta (Bryozoan) 28.1 20.3 Formulated feed 54.7 79.7 Detritus 14.1 Sand 6.3 6.8 Size of fish Total for all Food item Large (n = 33) fish (n = 149) Plant material 9.3 Diatoms 8.3 39.9 Filamentous algae 23.3 31.7 Protozoa (Volvox) 11.4 9.4 Insects 20.0 66.1 Diptera 6.7 29.0 Tricoptera 0.5 Odonata 1.7 0.5 Unidentified 11.7 36.1 Cladocera 6.7 35.5 Copepoda 10.0 11.5 Ostracoda 6.0 Rotifera 16.7 35.0 Ectoprocta (Bryozoan) 6.7 18.6 Formulated feed 45.0 59.6 Detritus 4.9 Sand 4.4
Still other microorganisms, such as the Volvox algae, are covered in flexible, undulating flagella whose coordinated waves add up to net motion.
Colonial organisms such as the green alga Volvox developed modified internal concentrations of nutrients and gases.
The smallest of these species (Gonium) have only a handful of cells arranged in a disk, while the Volvox that give the Volvocale line its name may have some 60,000 cells in the shape of a hollow sphere that is easily visible to the naked eye.