from The American Heritage® Dictionary of the English Language, 4th 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.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. 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.
from the GNU version of the Collaborative International Dictionary of English
- n. A rock consisting chiefly of calcium carbonate or carbonate of lime. It sometimes contains also magnesium carbonate, and is then called magnesian or dolomitic limestone. Crystalline limestone is called marble.
from The Century Dictionary and Cyclopedia
- n. Rock consisting wholly or in large part of calcareous material or carbonate of lime.
- 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.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals
Sorry, no etymologies found.
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)