Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of group is as below...

Darter :: Darter (n.) A small fresh-water etheostomoid fish. The group includes numerous genera and species, all of them American. See Etheostomoid..

Ascidioidea :: Ascidioidea (n. pl.) A group of Tunicata, often shaped like a two-necked bottle. The group includes, social, and compound species. The gill is a netlike structure within the oral aperture. The integument is usually leathery in texture. See Illustration in Appendix..

Portage Group :: Portage group () A subdivision of the Chemung period in American geology. See Chart of Geology.

Variety :: Variety (n.) An individual, or group of individuals, of a species differing from the rest in some one or more of the characteristics typical of the species, and capable either of perpetuating itself for a period, or of being perpetuated by artificial means; hence, a subdivision, or peculiar form, of a species..

Ganocephala :: Ganocephala (n. pl.) A group of fossil amphibians allied to the labyrinthodonts, having the head defended by bony, sculptured plates, as in some ganoid fishes..

Selenium :: Selenium (n.) A nonmetallic element of the sulphur group, and analogous to sulphur in its compounds. It is found in small quantities with sulphur and some sulphur ores, and obtained in the free state as a dark reddish powder or crystalline mass, or as a dark metallic-looking substance. It exhibits under the action of light a remarkable variation in electric conductivity, and is used in certain electric apparatus. Symbol Se. Atomic weight 78.9..

Zoanthus :: Zoanthus (n.) A genus of Actinaria, including numerous species, found mostly in tropical seas. The zooids or polyps resemble small, elongated actinias united together at their bases by fleshy stolons, and thus forming extensive groups. The tentacles are small and bright colored..

Rotifera :: Rotifera (n.) An order of minute worms which usually have one or two groups of vibrating cilia on the head, which, when in motion, often give an appearance of rapidly revolving wheels. The species are very numerous in fresh waters, and are very diversified in form and habits..

Monamine :: Monamine (n.) A basic compound containing one amido group; as, methyl amine is a monamine..

Sodium :: Sodium (n.) A common metallic element of the alkali group, in nature always occuring combined, as in common salt, in albite, etc. It is isolated as a soft, waxy, white, unstable metal, so readily oxidized that it combines violently with water, and to be preserved must be kept under petroleum or some similar liquid. Sodium is used combined in many salts, in the free state as a reducer, and as a means of obtaining other metals (as magnesium and aluminium) is an important commercial product. Symbol

Vanadium :: Vanadium (n.) A rare element of the nitrogen-phosphorus group, found combined, in vanadates, in certain minerals, and reduced as an infusible, grayish-white metallic powder. It is intermediate between the metals and the non-metals, having both basic and acid properties. Symbol V (or Vd, rarely). Atomic weight 51.2..

Strove :: Strisores (n. pl.) A division of passerine birds including the humming birds, swifts, and goatsuckers. It is now generally considered an artificial group..

Vadantes :: Vadantes (n. pl.) An extensive artificial group of birds including the wading, swimming, and cursorial birds..

Clumps :: Clumps (n.) A game in which questions are asked for the purpose of enabling the questioners to discover a word or thing previously selected by two persons who answer the questions; -- so called because the players take sides in two clumps or groups, the clump which guesses the word winning the game..

Hydramide :: Hydramide (n.) One of a group of crystalline bodies produced by the action of ammonia on certain aldehydes.

Colorado Group :: Colorado group () A subdivision of the cretaceous formation of western North America, especially developed in Colorado and the upper Missouri region..

Scolecite :: Scolecite (n.) A zeolitic mineral occuring in delicate radiating groups of white crystals. It is a hydrous silicate of alumina and lime. Called also lime mesotype.

Levirostres :: Levirostres (n. pl.) A group of birds, including the hornbills, kingfishers, and related forms..

Turbellaria :: Turbellaria (n. pl.) An extensive group of worms which have the body covered externally with vibrating cilia. It includes the Rhabdoc/la and Dendroc/la. Formerly, the nemerteans were also included in this group..

Ortho- :: Ortho- () The one of several acids of the same element (as the phosphoric acids), which actually occurs with the greatest number of hydroxyl groups; as, orthophosphoric acid. Cf. Normal..

Random Fonts

Most Popular