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  • Webster's Revised Unabridged Dictionary
    • Calcar (Anat) A curved ridge in the floor of the leteral ventricle of the brain; the calcar avis hippocampus minor, or ergot.
    • Calcar (Bot) A hollow tube or spur at the base of a petal or corolla.
    • n Calcar (Glass manuf) A kind of oven, or reverberatory furnace, used for the calcination of sand and potash, and converting them into frit.
    • Calcar (Zoöl) A slender bony process from the ankle joint of bats, which helps to support the posterior part of the web, in flight.
    • Calcar (Anat) A spur, or spurlike prominence.
    • ***
Century Dictionary and Cyclopedia
    • n calcar In botany, a spur; a hollow projection from the base of a petal or sepal; the nectary (nectarium) of Linnæus.
    • n calcar In anatomy, a projection into the posterior horn of the lateral ventricle of the brain of man and some other mammals; the calcar avis or hippocampus minor.
    • n calcar In ornithology, a spur. The horny process, with a bony core, borne upon the lower and inner part of the shank of sundry gallinaceous birds, as the turkey, pheasant, domestic cock, etc. It is of the same nature as a claw, or as the horns of cattle, but differs from a claw in being an offset from the side of a bone, not at the end of a phalanx. There is sometimes a pair of spurs, one above the other, on each shank, as in the genus Polyplectron. (See cut under calcarate.) Spurs are commonly developed only in the male sex, not passing a rudimentary condition, if found at all, in the female. (See cut under tarsometatarsus.)
    • n calcar In Rotifera, a spur-like setigerous process more or less closely attached to the single ganglion of these animals, near the trochal disk.
    • n calcar In Chiroptera, a slender elongated bone or cartilage upon the inner side of the ankle-joint, assisting in the support of the patagium.
    • n calcar [capitalized] [NL.] In entomology, a genus of atracheliate beetles, of the family Tenebrionidæ.
    • n calcar [capitalized] [NL.] In conchology, a genus of mollusks.
    • n calcar The spur forming part of any ceremonial costume.
    • n calcar In glass-works, an oven or furnace for calcining the materials of frit, prior to melting. Also called fritting-furnace.
    • n calcar In metallurgy, an annealing-arch or -oven.
    • n calcar In entomology, one of the spines at the tips of the tibiæ of certain insects, especially the Hymenoptera. Also called spur.
    • ***
Chambers's Twentieth Century Dictionary
    • n Calcar kal′kar (bot.) a spur or spur-like projection, esp. from the base of a petal:
    • n Calcar kal′kar an oven or furnace for calcining the materials of frit before melting—also Fritting-furnace: an arch or oven for annealing.
    • n Calcar kal′kar (anat.) an eminence in the lateral ventricles of the brain, the hippocampus minor or calcar avis
    • ***


Webster's Revised Unabridged Dictionary
L., a spur, as worn on the heel, also the spur of a cock, fr. calx, calcis, the heel
Chambers's Twentieth Century Dictionary
L., a spur—calx, calcis, the heel.


In literature:

These different colours are to be found in the calcareous plain, and are no doubt the work of centuries.
"Celebrated Travels and Travellers" by Jules Verne
Lime lime Selenite, gypsum, calcareous vitriol.
"Elements of Chemistry," by Antoine Lavoisier
On a given parallel of latitude, a man may happen to plant a tree upon a fine calcareous soil, and it does well.
"Soil Culture" by J. H. Walden
The outer layer sterile, often calcareous, forming a fragile crust, more or less defined.
"The North American Slime-Moulds" by Thomas H. (Thomas Huston) MacBride
It would appear as if the great variability of the valves was connected with the absence of calcareous matter.
"A Monograph on the Sub-class Cirripedia (Volume 1 of 2)" by Charles Darwin
The valley cirque is characteristic of calcareous districts.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4" by Various
Except on certain rich calcareous clay soils, it has now, however, become an exceedingly precarious crop.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5" by Various
They are mostly siliceous, but sometimes calcareous, and may differ very little in general appearance from the bulk of the sandstone.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7" by Various
Suited to a dry, calcareous soil.
"Notes on Agriculture in Cyprus and Its Products" by William Bevan
It renders the oxide of iron soluble in water, and contributes, as was before stated, to the solution of calcareous matter.
"Principles of Geology" by Charles Lyell
These enormous calcareous masses, which we observed on our way to Bagoung, could not fail to fix our attention.
"Travels in Tartary, Thibet, and China During the years 1844-5-6. Volume 2 [of 2]" by Evariste Regis Huc
But this proper calcified wall is quite distinct from calcareous tubes surrounding the siphuncle, which are developed from the septa.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6" by Various
In Devonshire the Lower Chalk has become thin sandy calcareous series.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7" by Various
The shale is covered by a bed of stone, chiefly composed of oval distinct concretions of a poor calcareous clay-iron stone.
"Narrative of a Second Expedition to the Shores of the Polar Sea" by John Franklin
Mineral springs of a ferruginous and calcareous nature, abound in the town and neighbourhood.
"Memoranda on Tours, Touraine and Central France." by J. H. Holdsworth
Dorsal valve, showing calcareous spiral coils.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3" by Various
The addition of marl to soils that are not naturally calcareous very much improves them.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 3" by Various
Many limestones are made up entirely of minute fragments of shells and coral, or of calcareous sand cemented together.
"A Manual of Elementary Geology" by Charles Lyell
Calker, or Calcar, as it is written by others, an excellent portrait painter, of Flemish extraction.
"The History of Painting in Italy, Vol. 3 (of 6)" by Luigi Antonio Lanzi
This is frequently the case in calcareous strata.
"Geology" by James Geikie

In news:

Crops grown on calcareous soils often fall victim to chlorosis, an iron (Fe) deficiency that can lead to internervial yellowing in young leaves.
Crops grown on calcareous soils often fall victim to chlorosis, an iron (Fe) deficiency that can lead to internervial yellowing in young leaves.
The last few years have been rough on vintners because of cold weather, but Calcareous Vineyard in Paso Robles says this year brought one of the best crops its seen.
Says Jason Joyce, Wine-maker for Calcareous Vineyard.
In collaboration with organizations like Plug -In Partners and Plug -In Bay Area, CalCars is on a mission to persuade carmakers to mass-produce plug -in hybrid vehicles.