Crossword clues for selenite
The Collaborative International Dictionary
Gypsum \Gyp"sum\ (j[i^]p"s[u^]m), n. [L. gypsum, Gr. gy`psos; cf. Ar. jibs plaster, mortar, Per. jabs[imac]n lime.] (Min.) A mineral consisting of the hydrous sulphate of lime (calcium). When calcined, it forms plaster of Paris. Selenite is a transparent, crystalline variety; alabaster, a fine, white, massive variety.
Selenite \Sel"e*nite\, n. (Chem.) A salt of selenious acid.
Selenite \Sel"e*nite\, n. [L. selenites, Gr. ???? (sc. ???), from selh`nh the moon. So called from a fancied resemblance in luster or appearance to the moon.] (Min.) A variety of gypsum, occuring in transparent crystals or crystalline masses.
Wiktionary
n. 1 (context mineralogy English) A soft, glassy form of gypsum (chemical formula calciumsulfuroxygen4·2water). 2 (context inorganic chemistry English) The anion seleniumO32− derived from selenous acid; any salt or ester of selenous acid.
Wikipedia
Selenite, satin spar, desert rose, and gypsum flower are four varieties of the mineral gypsum; all four varieties show obvious crystalline structure. The four "crystalline" varieties of gypsum are sometimes grouped together and called selenite.
All varieties of gypsum, including selenite and alabaster, are composed of calcium sulfate dihydrate (meaning that it has two molecules of water), with the chemical formula CaSO·2HO. Selenite contains no significant selenium; the similarity of names comes from both substances being named from the Ancient Greek word for the Moon.
The selenite anion is a selenium oxoanion with the chemical formula .
A selenite (compound) is a compound that contains this ion.
In slightly acid conditions, the hydrogenselenite ion, , is formed; in more acidic conditions selenous acid, HSeO, exists.
Most selenite salts can be formed by heating the relevant metal oxide with selenium dioxide, e.g.:
NaO + SeO → NaSeO.See :Category:Selenites for a list.
Selenite may refer to:
Usage examples of "selenite".
I was standing nearest to the bridge, and as I did this two of the Selenites laid hold of me, and pulled me gently towards it.
The shorter, thicker Selenite marched at first on our right flank, but presently came in front of us again.
There is, therefore, a constant eastward breeze in the air of the outer galleries, and an upflow during the lunar day up the shafts, complicated, of course, very greatly by the varying shape of the galleries, and the ingenious contrivances of the Selenite mind.
We crawled, as it seemed, a long time before we saw either Selenite or mooncalf, though we heard the bellowing and gruntulous noises of these latter continually drawing nearer to us.
Selenite appointed to be a minder of mooncalves is from his earliest years induced to think and live mooncalf, to find his pleasure in mooncalf lore, his exercise in their tending and pursuit.
The door behind us opened wider, and, glancing over my shoulder, I saw a vague large space beyond, in which quite a little crowd of Selenites were standing.
With each, the cave opened out and the number of Selenites visible increased.
The figures of Cavor and the guiding Selenite marched before me, the sides of their legs and heads that were towards the rivulet were clear and bright blue, their darkened sides, now that the reflection of the tunnel wall no longer lit them, merged indistinguishably in the darkness beyond.
But within the moon, practically unsuspected by me, there are, it seems, a number of other sorts of Selenite, differing in size, differing in the relative size of part to part, differing in power and appearance, and yet not different species of creatures, but only different forms of one species, and retaining through all their variations a certain common likeness that marks their specific unity.
The moon is, indeed, a sort of vast ant-hill, only, instead of there being only four or five sorts of ant, there are many hundred different sorts of Selenite, and almost every gradation between one sort and another.
It became apparent that the source of much, at least, of the tumult of sounds which had filled our ears ever since we had recovered from the stupefaction of the fungus was a vast mass of machinery in active movement, whose flying and whirling parts were visible indistinctly over the heads and between the bodies of the Selenites who walked about us.
Indisputably there were several Selenites, perhaps a considerable number, in this space, for we could hear the noises of their intercourse, and faint sounds that I identified as their footfalls.
There is, therefore, a constant eastward breeze in the air of the outer galleries, and an upflow during the lunar day up the shafts, complicated, of course, very greatly by the varying shape of the galleries, and the ingenious contrivances of the Selenite mind.
And the Selenites would then ask themselves if the fixed stars also are not so many suns surrounded by their moons and by their other planets, and if the inhabitants of those planets also see other stars unknown to us, which would be that many more suns with as many planets, and so on and on, to infinity.
It would seem the exterior Selenites I saw were, indeed, mostly engaged in kindred occupations—mooncalf herds, butchers, fleshers, and the like.