- any colonial, freshwater green algae of the genus Volvox, forming a hollow, greenish sphere of flagellated cells.
Origin of volvox
Examples from the Web for volvox
In all of these the structure of the cells is essentially as in Volvox.
Of the forms that are united in colonies one of the best known is Volvox (Fig. 10).
This, it is affirmed by Dr. Hicks, takes place in Volvox, under circumstances which suggest a vegetable transformation.The Ocean World:
In some cases (Volvox) the cluster, or the compound plant, is round and moves briskly in the water, closely resembling an animal.The Story of Evolution
If a half-inch lens be now used, the structure of the volvox begins to be exhibited.
- any freshwater flagellate protozoan of the genus Volvox, occurring in colonies in the form of hollow multicellular spheres
Word Origin and History for volvox
1798, from Latin volvere "to roll," from PIE root *wel- "to turn, revolve," with derivatives referring to curved, enclosing objects (cf. Sanskrit valate "turns round," ulvam "womb, vulva;" Lithuanian valtis "twine, net," apvalus "round;" Old Church Slavonic valiti "roll, welter," vluna "wave;" Greek eluo "wind, wrap," helix "spiral object," eilein "to turn, squeeze;" Gothic walwjan "to roll;" Old English wealwian "roll," weoloc "whelk, spiral-shelled mollusk;" Old High German walzan "to roll, waltz;" Old Irish fulumain "rolling;" Welsh olwyn "wheel").