American Heritage® Dictionary of the English Language, Fourth Edition
- n. A common sedimentary rock consisting mostly of calcium carbonate, CaCO3, used as a building stone and in the manufacture of lime, carbon dioxide, and cement.
Century Dictionary and Cyclopedia
- n. Rock consisting wholly or in large part of calcareous material or carbonate of lime. Where, as is often the case, there is some carbonate of magnesia mixed with the lime, the rock is called
dolomitic limestone, and from this there may be a gradual transition to dolomite. Marble is the name given to the more crystalline limestones, and especially to such as are solid and handsome enough to be used for ornamental purposes or in costly buildings. Limestones are classed as silicious or argillaceous, according to the amount of sand or silica or of clay they contain. They are of many shades of color, reddish, grayish, and slatecolored tints being the most common. Many marbles, however, are either pure white or slightly clouded with tints of gray, red, or brown; but some are so dark as to appear when polished almost black. The limestone of the fossiliferous stratified groups is generally admitted to have been the result of organic agencies, just as limestone deposits are seen forming at the present time from the debris of coral growth. The crystalline varieties of limestone and marble which occur in the azoic or archæan rocks are by some believed to be a chemical precipitate or segregation, while others consider their existence proof that these rocks, in which no fossils have yet been found, are metamorphosed sedimentary beds, and that this limestone is also the result of organic life.
- n. A limestone in the New York series of formations, originally called the Scutella and Upper Pentamerus limestones of the Lower Helderberg group of strata. It belongs to the lowest or Helderbergian division of the Lower Devonian, lying near the top, beneath the Port Ewen beds and above the New Scotland limestone. It abounds in fossil remains, and from its purity is highly esteemed both as a construction stone and as a flux in smelting.
- n. A division of the Lower Silurian of New York State and the adjoining regions, originally termed by Eaton the “Calciferous sandrock.” It is regarded as the lowest member of the Lower Silurian, resting on and graduating by easy changes from the Potsdam sandstone beneath. The rock in northern New York and the Lake Champlain basin is largely a limestone, at times magnesian, and carries a profuse and highly interesting marine fauna. In the Mohawk valley the beds are almost devoid of organic remains, are highly dolomitic, and have been locally designated as the Little Falls dolomite.
- n. mineralogy An abundant rock of marine and fresh-water sediments; primarily composed of calcite (CaCO₃); it occurs in a variety of forms, both crystalline and amorphous.
- adj. Made of or with limestone.
GNU Webster's 1913
- n. A rock consisting chiefly of calcium carbonate or carbonate of lime. It sometimes contains also magnesium carbonate, and is then called
magnesianor dolomitic limestone. Crystalline limestone is called marble.
- n. a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals
“It is scarcely more previous than the underlying limestones, and why a solution that could penetrate and leach ores from it should be stopped at the upper surface of the blue limestone is not obvious; nor why the plane of junction between the porphyry and the _blue limestone_ should be the special place of deposit of the ore.”
“In examining the specimens collected by the indefatigable Caillaud in the Lybian desert and the Oasis of Siwa, we recognize sandstone similar to that of Thebes; fragments of petrified dicotyledonous wood (from thirty to forty feet long), with rudiments of branches and medullary concentric layers, coming perhaps from tertiary sandstone with lignites; * chalk with spatangi and anachytes, Jura limestone with nummulites partly agatized; another fine-grained limestone* employed in the construction of the temple of Jupiter Ammon (Omm – Beydah); and gem-salt with sulphur and bitumen.”
“(from thirty to forty feet long), with rudiments of branches and medullary concentric layers, coming perhaps from tertiary sandstone with lignites; * (* Formation of molassus.); chalk with spatangi and anachytes, Jura limestone with nummulites partly agatized; another fine-grained limestone* employed in the construction of the temple of”
“Thus, what we call limestone is a more or less pure calcareous earth in combination with a delicate acid, which is familiar to us in the form of a gas.”
“The building, clad in limestone, was built in 1917 and has only 12 apartments.”
“Her mother worked in limestone pits exposing her to excessive amounts of fluoride while pregnant.”
“Also, significantly more limestone is mixed in this layer than the first.”
“Diatoms and corals have been sequestering it in limestone for millions of years.”
“This recently completed new Gothic church in roughly hewn Texas limestone is located in the Spring Branch section of Houston, Texas, off Wirt Road.”
“(Venus of Willendorf figure, in limestone, carved 20,000 to 25,000 years ago)”
These user-created lists contain the word ‘limestone’.
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Words I'm learning or investigating that I found by reading Life Expectancy (not all words are in the book).
Vendors can get oddly creative.
Words I like mostly because of the way they sound and feel.
These chromonyms are defined as colors in at least one dictionary (mostly MW3). (Actually there's one fake, for reasons I'll explain someday.) They are all one-word nouns such as "kelly", which can...
Adjectives used in actual (non-taxonomic) bird names, past and present.
A big list of color names for use on wordrainbow.com
The descriptive science described.
I like rocks. And all the names attributed to rocks and other geologic formations. Also see the earth list.
Looking for tweets for limestone.