Century Dictionary and Cyclopedia
- A division of thallogenous chlorophyllous cryptogams found for the most part in the sea (seaweeds) or in fresh water. They are wholly cellular, though varying exceedingly in form and size, from a single microscopic or sometimes large and branching cell, a shapeless, jelly-like mass, or mere string of articulations, to forms with trunk-like stems and membranous laminæ many feet in length. Nourishment is absorbed by the surface of the plant, never through roots. The mode of propagation varies greatly in the different orders. In many no well-defined sexual differences have been discovered, and reproduction is carried on by means of cell-division or by non-sexual spores (tetraspores, zoöspores). In the highest order there are distinct male and female organs (antheridia and oögonia). The term Algæ as used by Linnæus and early botanists included not only seaweeds, but also the Hepaticæ, Lichenes, and Characeæ. By Harvey the Algæ were divided into three groups, distinguished chiefly by their color, viz.: the olive-brown, Melanospermeæ; the red or purple, Rhodospermeæ; and the green, Chlorospermeæ. This arrangement has now become nearly obsolete. Recent authorities have proposed several different schemes of classification for the thallophytes in general, in which structure and development, as well as supposed relationship, are taken into account, and in which the Algæ are variously distributed. Substantial agreement is not yet reached, and the nomenclature for many of the groups remains in a very unsettled condition. It may, however, be said that the Algæ are now generally divided into the following orders (classes, etc., of some), viz.: Florideæ, the most highly developed, producing cystocarps after fertilization; Oösporeæ, propagating sexually by oospores; Zoosporeæ, distinguished by the conjugation of zoospores; Conjugatæ, including the diatoms, desmids, etc., in which there is a conjugation of cells; and a remainder, the Cryptophyceæ of Thuret, variously disposed of by other authors, in which there is no known sexual reproduction. Many of the Algæ are edible and nutritious, as carrageen or Irish moss, dulse, laver, etc. Many abound in gelatin, and make a fine glue or substitute for isinglass. Kelp, iodine, and bromine are products of various species. Seaweeds are also valuable as fertilizers.
- n. Plural form of alga.
GNU Webster's 1913
- n. plural of alga.
- n. primitive chlorophyll-containing mainly aquatic eukaryotic organisms lacking true stems and roots and leaves
“On the other hand, the fountain was hell to keep refilling throughout the winter (we couldn't let it freeze, and we hadn't emptied it of water), and the algae is a continual battle.”
“Farther out, where the algae is more diluted but equally fueled by pollution, it swirls with the currents, a vast network of green tendrils across the surface of Tai Lake.”
“Out further, where the algae is more diluted but equally fueled by pollution, it swirls with the currents, a vast network of green tendrils across the surface of Tai Lake.”
“Every time I fish a weighted jig, it just comes back covered in algae, weeds, and pond snot.”
“The last time I saw her she was cleanina algae from the inside of my fish tank.”
“In addition, 90% by weight of the algae is captured carbon dioxide, which is “sequestered” by this process and so contributes significantly to the reduction of greenhouse gases.”
“One of the advantages of several strains of algae is that they can be grown in salt water.”
“The promise of algae is that it can be located anywhere that gets lots of sun.”
“The process of extracting oil from algae is basically the same as other biofuel technology.”
“A slow flow through the tube for growth then the mature algae is dried and powdered and burned in the engine as a fine powder.”
These user-created lists contain the word ‘algae’.
All the scientific words found in the official EU nomenclature. For the screening I used Vocabgrabber of the Visual Thesaurus.
includes words of the "Prodcom list"
This is the place to add words you'd like Charles Harrington Elster to pronounce for you!
Add any words you know that have these letter combinations!
Words that are becoming more important as we learn more about alternative and renewable energy sources.
Cool names of stuff you might find in a saltwater aquarium.
Looking for tweets for algae.