cuprum
n . 铜
铜
Cuprum \
Cu "
prum \ (
k ?"
pr ?
m ),
n . [
L .] (
Chem .)
Copper .
[
1913 Webster ]
Element \
El "
e *
ment \,
n . [
F . ['
e ]
l ['
e ]
ment ,
L .
elementum .]
1 .
One of the simplest or essential parts or principles of which anything consists ,
or upon which the constitution or fundamental powers of anything are based .
[
1913 Webster ]
2 .
One of the ultimate ,
undecomposable constituents of any kind of matter .
Specifically : (
Chem .)
A substance which cannot be decomposed into different kinds of matter by any means at present employed ;
as ,
the elements of water are oxygen and hydrogen .
[
1913 Webster ]
Note :
The elements are naturally classified in several families or groups ,
as the group of the alkaline elements ,
the halogen group ,
and the like .
They are roughly divided into two great classes ,
the metals ,
as sodium ,
calcium ,
etc .,
which form basic compounds ,
and the nonmetals or metalloids ,
as oxygen ,
sulphur ,
chlorine ,
which form acid compounds ;
but the distinction is only relative ,
and some ,
as arsenic ,
tin ,
aluminium ,
etc .,
form both acid and basic compounds .
The essential fact regarding every element is its relative atomic number ,
which is equal to the number of protons in the nucleus ,
and also equal to the number of electrons in orbitals around the nucleus when the atom is neutral .
When the elements are tabulated in the order of their ascending atomic numbers ,
the arrangement constitutes the series of the Periodic law of Mendelejeff .
See {
Periodic law },
under {
Periodic }.
This Periodic law enables us to predict the qualities of unknown elements .
The number of elements known in 1890 were about seventy -
five ,
but at that time the gaps in the Periodic law indicated the possibility of many more .
All of the elements up to atomic number 100 have now been observed though some are radioactive and very unstable ,
and in some cases cannot be accumulated in quantity sufficient to actually see by eye .
The properties predicted by the periodic law wre close to the observed properties in many cases .
Additional unstable elements of atomic number over 100 are observed from time to time ,
prepared in cyclotrons ,
particle acclerators ,
or nuclear reactors ,
and some of their properties are measurable by careful observation of microscopic quantities ,
as few as several atoms .
For such unstable elements ,
the properties are now predicted primarily by calculations based on quantum mechanics .
Such theories suggest that there may be an "
island "
of relative stability of elements of atomic number over 120 ,
but this has yet to be confirmed by experiment .
Many of the elements with which we are familiar ,
as hydrogen ,
carbon ,
iron ,
gold ,
etc .,
have been recognized ,
by means of spectrum analysis ,
in the sun and the fixed stars .
The chemical elements are now known not be simple bodies ,
but only combinations of subatomic particles such as protons ,
neutrons ,
and electrons ;
ahd protons and neutrons are now believed to be themselves combinations of quarks ,
particles which are not observed singly ,
but only in combinations .
In formulas ,
the elements are designated by abbreviations of their names in Latin or New Latin ,
given in the table below .
The atomic weights given in the table below are the {
chemical atomic weights },
in some cases being the weighted average of the atomic weights of individual isotopes ,
each having a different atomic weight .
The atomic weight of the individual isotopes are called the physical atomic weights .
In those few cases where there is only one stable isotope of an element ,
the chemical and physical atomic weights are the same .
The mass -
spectrometric atomic weights are those used for careful mass -
spectrometric measurements .
For more details about individual elements ,
see the element names in the vocabulary The Elements ----------------------------------------------------------
Name |
Sym -|
Atomic Weight |
|
bol |
O =
16 |
H =
1 |
C =
12 .
000 ----------------------------------------------------------
Aluminum |
Al |
27 .
1 |
26 .
9 |
Antimony (
Stibium ) |
Sb |
120 |
119 .
1 |
Argon |
A |
39 .
9 |
39 .
6 |
Arsenic |
As |
75 |
74 .
4 |
Astatine |
At |
Barium |
Ba |
137 .
4 |
136 .
4 |
Beryllium |
Be |
Bismuth |
Bi |
208 .
5 |
206 .
9 |
Boron |
B |
11 |
10 .
9 |
Bromine |
Br |
79 .
96 |
79 .
36 |
Cadmium |
Cd |
112 .
4 |
111 .
6 |
Cesium (
Caesium ) |
Cs |
133 |
132 |
Calcium |
Ca |
40 |
39 .
7 |
Carbon |
C |
12 |
11 .
91 |
12 .
000 Cerium |
Ce |
140 |
139 |
Chlorine |
Cl |
35 .
45 |
35 .
18 |
Chromium |
Cr |
52 .
1 |
51 .
7 |
Cobalt |
Co |
Columbium (
see {
Beryllium })
Copper |
Cu |
({
Cuprum })
Erbium |
Er |
Europium |
Eu |
Einsteinium |
Es |
Fermium |
Fe |
Fluorine |
F |
Gadolinium |
Gd |
Gallium |
Ga |
Germanium |
Ge |
Glucinum (
now {
Beryllium })
Gold (
Aurum ) |
Au |
Helium |
He |
Hydrogen |
H |
Indium |
In |
Iodine |
I |
Iridium |
Ir |
Iron |
Fe |
(
Ferrum )
Krypton |
Kr |
Lanthanum |
La |
Lead |
Pb |
(
Plumbum )
Lithium |
Li |
Magnesium |
Mg |
Manganese |
Mn |
Mercury |
Hg |
({
Hydrargyrum })
Molybdenum |
Mo |
Neodymium |
Nd |
Neon |
Ne |
Nickel |
Ni |
Niobium |
Nb |
(
see Columbium )
Nitrogen |
N |
Osmium |
Os |
Oxygen |
O |
Palladium |
Pd |
Phosphorus |
P |
Platinum |
Pt |
Potassium |
K |
(
Kalium )
Praseodymium |
Pr |
Rhodium |
Rh |
Rubidium |
Rb |
Ruthenium |
Ru |
Samarium |
Sa |
Scandium |
Sc |
Selenium |
Se |
Silicon |
Si |
Silver |
Ag |
(
Argentum )
Sodium |
Na |
(
Natrium )
Strontium |
Sr |
Sulphur |
S |
Tantalum |
Ta |
Tellurium |
Te |
Thallium |
Tl |
Thorium |
Th |
Thulium |
Tu |
Tin |
Sn |
(
Stannum )
Titanium |
Ti |
Tungsten |
W |
(
Wolframium )
Uranium |
U |
Vanadium |
V |
Wolfranium (
see {
Tungsten })
Xenon |
X |
Ytterbium |
Yb |
Yttrium |
Y |
Zinc |
Zn |
Zirconium |
Zr |
----------------------------------------------------------
[
1913 Webster ]
Note :
Several other elements have been announced ,
as holmium ,
vesbium ,
austrium ,
etc .,
but their properties ,
and in some cases their existence ,
have not yet been definitely established .
[
1913 Webster ]
3 .
One of the ultimate parts which are variously combined in anything ;
as ,
letters are the elements of written language ;
hence ,
also ,
a simple portion of that which is complex ,
as a shaft ,
lever ,
wheel ,
or any simple part in a machine ;
one of the essential ingredients of any mixture ;
a constituent part ;
as ,
quartz ,
feldspar ,
and mica are the elements of granite .
[
1913 Webster ]
The simplicity which is so large an element in a noble nature was laughed to scorn . --
Jowett (
Thucyd .).
[
1913 Webster ]
4 .
(
a )
One out of several parts combined in a system of aggregation ,
when each is of the nature of the whole ;
as ,
a single cell is an element of the honeycomb .
(
b ) (
Anat .)
One of the smallest natural divisions of the organism ,
as a blood corpuscle ,
a muscular fiber .
[
1913 Webster ]
5 . (
Biol .)
One of the simplest essential parts ,
more commonly called cells ,
of which animal and vegetable organisms ,
or their tissues and organs ,
are composed .
[
1913 Webster ]
6 . (
Math .)
(
a )
An infinitesimal part of anything of the same nature as the entire magnitude considered ;
as ,
in a solid an element may be the infinitesimal portion between any two planes that are separated an indefinitely small distance .
In the calculus ,
element is sometimes used as synonymous with differential .
(
b )
Sometimes a curve ,
or surface ,
or volume is considered as described by a moving point ,
or curve ,
or surface ,
the latter being at any instant called an element of the former .
(
c )
One of the terms in an algebraic expression .
[
1913 Webster ]
7 .
One of the necessary data or values upon which a system of calculations depends ,
or general conclusions are based ;
as ,
the elements of a planet '
s orbit .
[
1913 Webster ]
8 .
pl .
The simplest or fundamental principles of any system in philosophy ,
science ,
or art ;
rudiments ;
as ,
the elements of geometry ,
or of music .
[
1913 Webster ]
9 .
pl .
Any outline or sketch ,
regarded as containing the fundamental ideas or features of the thing in question ;
as ,
the elements of a plan .
[
1913 Webster ]
10 .
One of the simple substances ,
as supposed by the ancient philosophers ;
one of the imaginary principles of matter .
(
a )
The four elements were ,
air ,
earth ,
water ,
and fire ;
Note :
whence it is said ,
water is the proper element of fishes ;
air is the element of birds .
Hence ,
the state or sphere natural to anything or suited for its existence .
[
1913 Webster ]
Of elements The grosser feeds the purer :
Earth the Sea ;
Earth and the Sea feed Air ;
the Air those Fires Ethereal . --
Milton .
[
1913 Webster ]
Does not our life consist of the four elements ?
--
Shak .
[
1913 Webster ]
And the complexion of the element [
i .
e .,
the sky or air ]
In favor '
s like the work we have in hand ,
Most bloody ,
fiery ,
and most terrible . --
Shak .
[
1913 Webster ]
About twelve ounces [
of food ],
with mere element for drink . --
Cheyne .
[
1913 Webster ]
They show that they are out of their element .
--
T .
Baker .
Esp .,
the conditions and movements of the air . "
The elements be kind to thee ."
(
b )
The elements of the alchemists were salt ,
sulphur ,
and mercury . --
Brande &
C .
[
1913 Webster ]
11 .
pl .
The whole material composing the world .
[
1913 Webster ]
The elements shall melt with fervent heat . --
2 Peter iii .
10 .
[
1913 Webster ]
12 .
pl . (
Eccl .)
The bread and wine used in the eucharist or Lord '
s supper .
[
1913 Webster ]
{
Magnetic element },
one of the hypothetical elementary portions of which a magnet is regarded as made up .
[
1913 Webster ]
安装中文字典英文字典查询工具!
中文字典英文字典工具:
复制到剪贴板
英文字典中文字典相关资料:
THE BEST 10 CAFES in SEATTLE, WA - Updated 2026 - Yelp Best Cafes in Seattle, WA - Last Updated April 2026 - Café Hagen, Miero Coffee Bar, Hood Famous, Bakery Nouveau, Taz Matcha, Fresh Flours, Seattle Meowtropolitan, Mr West Cafe Bar Downtown, La Parisienne French Bakery, Petit Pierre Bakery
Seattles Best Cafes [Updated 2026] From cozy corners perfect for reading to vibrant spaces buzzing with energy, each cafe has its own story to tell Join me as we dive into a selection of my favorites, where the aroma of fresh coffee meets the delightful charm of Seattle's eclectic culture
The 21 Best Coffee Shops In Seattle - Seattle - The Infatuation Check out the best coffee shops in Seattle, from little walk-up windows and iconic roasting operations to grungy lounges that double as vinyl stores
Best Coffee Shops In Seattle (2026): Local Favorites Beyond Starbucks Seattle has earned its nickname as the “coffee capital of the country” and is by far one of the most famous coffee cities in the entire world It’s no secret that Seattle is known for coffee, and this list offers just a small sample of all the incredible cafes within this special city
The Best Coffee Shops in Seattle From Espresso Vivace to Boon Boona Coffee: The second-wave pioneers, multiroaster cafés, and geographic specialists that make Seattle’s coffee scene great
Where to Find Seattle’s Best Coffee | Eater Seattle And our long-tenured espresso culture began in 1959 when Ben Laigo opened the Door, the first cafe in the city to feature an espresso machine Today, you can find countless great coffee shops
14 Best Cafes in Seattle Near Me Explore our handpicked collection of 14 Best Cafes in Seattle meticulously scrutinized through our thorough review process Uncover a culinary delight with comprehensive information, including reviews, ratings, address, and contact details—everything you need for a delightful experience
5 Best Cafes In Seattle (2026) Discover the best cafes in Seattle with our top picks, pricing details, and tips for an unforgettable coffee experience in this vibrant city
Must-Try Cafes Coffee Shops in Seattle, Washington Fuel up for your day with a refreshing stop at one of these must-visit cafes coffee shops in Seattle, Washington!
15 Best Coffee Shops In Seattle, Washington To make this easier, here are 15 essential Seattle coffee shops you need to try out today, whether you’re just visiting or living in the area and want to find a few new places to hang out 1 Analog