noun
definition
Water with a very low content of dissolved salt, as opposed to brackish water or salt water.
noun
definition
A body of fresh water
adjective
definition
Living in fresh water.
example
The trout is a freshwater fish.
definition
Consisting of fresh water.
example
Lake Baikal is the world's largest freshwater lake in terms of volume.
definition
Unskilled as a seaman.
example
a freshwater sailor
definition
Neoclassical, in reference to U.S. macroeconomics and economics departments near the Great Lakes.
synonyms
Examples of freshwater in a Sentence
On the Llano Estacado there are both freshwater and salt lakes, and there are a few salt lakes in the Trans-Pecos Province and near the mouth of the Rio Grande on the Coastal Plain.
The very large assemblage of forms coming under this order comprises the most highly developed predaceous sea-snails, numerous vegetarian species, a considerable number of freshwater and some terrestrial forms. The partial dissection of a male specimen of the common periwinkle, Littorina littoralis, drawn in fig.
A very fine freshwater fish is the Murray cod, which sometimes weighs Too lb; and the golden perch, found in the same river, has rare beauty of colour.
Several of the marine and many species of freshwater algae are peculiar to the island.
Upon these rest patches of freshwater deposits containing numerous remains of plants.
In freshwater lakes and ponds, especially if the water is stagnant, aquatic plants are abundant.
They consist chiefly of sands and clays of aeolian and freshwater origin.
Of the twenty-one species of freshwater fish, five are peculiar to the country, but none is of much economic value save the barbel and eel.
But for a long period past the freshwater streams (which predominate) have been used for irrigation to such a degree that very little of the precious water is allowed to run to waste into the lake basins; so that these latter receive only a few salt streams, which deposit on their surface the salt they contain and then evaporate.
Freshwater fish, consisting mostly of catfish, buffalo fish, bass, sunfish and drum, are common in the lower courses of the rivers.
Texas has no large lakes; but freshwater lakes, which are fed either by streams or springs, are common on the Coastal Plain; the best known of them are Grand Lake in Colorado county, Clear Lake in Harris county, and Caddo Lake on the Louisiana border.
The records of the wars in Ireland in the r6th century show that the petty chieftains of that time had their defensive strongholds constructed in the "freshwater lochs" of the country, and there is record evidence of a similar system in the western parts of Scotland.
One species, however, Distira semperi, is confined to the landlocked freshwater Lake Taal at Luzon in the Philippines.
Chlorophyceae include both marine and freshwater plants.
A wide gap separates Archaeopteryx from the next order of fossil birds of the Cretaceous epoch, and, since freshwater deposits of that age are rare, bird remains are uncommon.
Japanese rivers and lakes are the habitation of severalseven or eightspecies of freshwater crab (kani), which live in holes on the shore and emerge in the day-time, often moving to considerable distances from their homes.
Elsewhere the plants generally indicate a higher horizon and are considered to correspond with the Rhaetic of Europe_ Jurassic beds are known only in the Cordillera itself, and the Cretaceous beds, which occur in the west of the country, are of freshwater origin.
In some families, as many freshwater snakes, the sea snakes, Viperinae and Crotalinae, the eggs are retained in the oviduct until the embryo is fully developed.
He was the author of the De mensura orbis terrae, finished in 825, which contains the earliest clear notice of a European discovery of and settlement in Iceland and the most definite Western reference to the old freshwater canal between the Nile and the Red Sea, finally blocked up in 767.
The portion known as Freshwater Gate fronts the English Channel from the strip of low-lying coast interposed between the cliffs of the peninsula and those of the main part of the island.
For the study of freshwater Entomostraca large possibilities are now opened to the naturalist.
At the present time it represents an intermingling of marine and freshwater forms. To the former belongs the herring (Clupea), and to the latter, species of Cyprinus, Perca and Silurus, also a lobster.
The valley, which extends from the borders of Sussex to Hythe, is occupied chiefly by the Weald clays, which contain a considerable number of marine and freshwater fossils.
Morton Park contains 200 acres of woodland bordering the shores of Billington Sea (a freshwater lake).
Cyrenellidae.-Two elongated, united, non-retractile siphons; freshwater.
Mutelidae.-Differs from Unionidae in having two pallial sutures; freshwater.
Aetheriidae.-Shell irregular, generally fixed in the adult; foot absent; freshwater.
Conjugatae, Protococcales and Characeae are exclusively freshwater; Confervales and Siphonales are both freshwater and marine, but the latter group attains its greatest development in the sea.
Thorea, Lemanea, Tuomeya, Stenocladia, Batrachospermum, Balbiania are genera belonging entirely to fresh water; and Bangia, Chantransia, Caloglossa, Bostrychia and Delesseria contain each one or more freshwater species.
In the case of the freshwater algae, however, belonging to the Chlorophyceae and Cyanophyceae, although they required to be immersed during the vegetative period, the reproductive cells are often capable of resisting a considerable degree of desiccation, and in this condition are dispersed through great distances by various agencies.
The great majority of the aquatic algae, both freshwater and marine, are attached plants.
To the aggregate of such forms, both animal and vegetable, the term plankton has been applied, and the investigation of the vegetable plankton, both freshwater and marine, has been pursued in recent times with energy and success.
The German Plankton Expedition of 1889 added greatly to our knowledge of the floating vegetable life of the North Atlantic Ocean, while many laboratories established on the shores of inland seas and lakes have rendered a similar service in the case of our freshwater phyto-plankton.
The families Diatomaceae, Peridiniaceae and Protococcaceae are best represented in the pelagic plankton, while in addition the Volvocaceae are an important element in freshwater plankton.
The presence of tannin has been established in the case of a great number of freshwater algae.
In the case of the freshwater species the host-plants are mostly species of aquatic Graminaceae, Naiadaceae or Nymphaeaceae.
The Characeae among freshwater algae and the Sargassaceae among marine algae might be cited as examples.
The occurrence of a plentiful mucilage in many freshwater forms is, however, doubtless a provision against desiccation on exposure.
They consist of marine beds alternating with freshwater and littoral deposits, together with plant beds and coal-seams of considerable thickness.
The lower part of the Miocene is marine in Herat and Afghan Turkestan; but the upper Miocene is usually of freshwater or estuarine origin.
The Pliocene consists entirely of freshwater and terrestrial deposits, which were probably laid down at the foot of the rising hills and on the floors of the intervening valleys.
It is not unlikely that such changes have in past time occurred; and if so an explanation is afforded of the occurrence of allied forms of freshwater dolphins (Platanista) and of many other animals in the two rivers and in the Brahmaputra.
Even if they are entirely of freshwater origin, we should expect that some traces of life from the waters or neighbouring land would be found.
The beds are almost entirely of freshwater origin.
Freshwater oysters, which attain a large size, are also found in the rivers, particularly in the Niger.
In the central and southern portions of the plateau the streams either flow into salt lakes, where their waters pass off by evaporation, or into freshwater lakes, which have no visible outlets.
The freshwater lakes are Beishehr Geul (anc. Karalis), 3770 ft., a fine sheet of water 30 m.
Marine Eocene beds occur near the Dardanelles, but the Tertiary deposits of this part of Asia Minor are mostly freshwater and belong to the upper part of the system.
The contemporaneous beds inland are of freshwater origin.
The eastern ranges of the Bolivian Andes are formed of Palaeozoic rocks with granitic and other intrusions; the Western Cordillera consists chiefly of Jurassic and Cretaceous beds, together with the lavas and ashes of the great volcanoes; while the intervening plateau is covered by freshwater and terrestrial deposits through which rise ridges of Palaeozoic rock and of a series of red sandstones and gypsiferous marls of somewhat uncertain age (probably, in part at least, Cretaceous).