A free-living flatworm which has a three-branched intestine and a tubular pharynx, typically located halfway down the body.
- Order Tricladida, class Turbellaria: Planaria and other genera.
- The mostly free-living Turbellaria include the planarian, Dugesia, shown above; these are found in the oceans, in fresh water, and in moist terrestrial habitats, and a few are parasitic.
- Some animals also show great ability to regenerate: small fragments of animals such as starfish, planarians, and Hydra can give rise to a whole animal.
- We then conducted competitive hybridization experiments of cDNAs between a head portion and the other body portion of planarians in order to screen genes specifically expressed in a planarian brain.
Mid 19th century: from modern Latin Planaria (feminine of Latin planarius 'lying flat') + -ian.
Words that rhyme with planarianagrarian, antiquarian, apiarian, Aquarian, Arian, Aryan, authoritarian, barbarian, Bavarian, Bulgarian, Caesarean (US Cesarean), centenarian, communitarian, contrarian, Darien, disciplinarian, egalitarian, equalitarian, establishmentarian, fruitarian, Gibraltarian, grammarian, Hanoverian, humanitarian, Hungarian, latitudinarian, libertarian, librarian, majoritarian, millenarian, necessarian, necessitarian, nonagenarian, octogenarian, ovarian, Parian, parliamentarian, predestinarian, prelapsarian, proletarian, quadragenarian, quinquagenarian, quodlibetarian, Rastafarian, riparian, rosarian, Rotarian, sabbatarian, Sagittarian, sanitarian, Sauveterrian, sectarian, seminarian, septuagenarian, sexagenarian, topiarian, totalitarian, Trinitarian, ubiquitarian, Unitarian, utilitarian, valetudinarian, vegetarian, veterinarian, vulgarian
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