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Longman Dictionary of Contemporary English
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obstetrics
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bet
401
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385
Emergency
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ohmically
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knowing
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91
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och
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100
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3
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45
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121
area
849
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280
openhearted
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Dissipate
84
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104
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169
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507
restroom
197
gas
489
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95
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91
Anticipate
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141
willing
401
Manipulation
279
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447
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851
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658
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3
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organogram
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Criminal
190
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423
ordure
2
mega
116
gusto
54
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4
infuriating
52
glorious
368
Helmet
169
flashlight
96
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2
ossific
2
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2
ottoman
2
outran
1
oakier
3
basis
409
nostalgically
3
Bonfire
175
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3
amicable
121
numismatics
3
matchet
1
detractor
56
musical
360
Flash
200
record
619
Criterion
314
officialize
2
pulse
395
isolate
365
Motion
205
adequate
496
octopoid
3
ohioan
2
barrage
198
Air
271
outre
1
microcomputer
302
Pinocchio
7
Prefer
156
nursery
354
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33
obscuration
2
openers
2
oft
2
blackguard
65
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45
cheer
406
ours
1
obscurant
3
irritability
55
oman
2
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2
veil
355
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88
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22
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103
Fierce
173
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391
crablike
70
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332
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228
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59
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109
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451
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444
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180
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352
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84
Infrastructure
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100
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285
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744
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187
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Fad
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197
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5
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215
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218
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6
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1
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228
blinkered
94
occasionality
3
octane
3
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390
undertake
409
Infected
157
unwell
204
Screening
135
cross-town
120
occultation
4
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3
aisle
170
recall
387
bonds
57
Attribute
210
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366
preferable
479
occupies
4
unmitigated
250
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518
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3
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2
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302
incoherent
224
continuation
106
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2
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2
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63
Easy
161
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2
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316
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2
omen
2
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3
Alliance
138
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2
otaku
1
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3
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2
nannyish
2
venture
442
official
525
Contemptuous
239
productive
361
Foul
158
Leadership
226
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1
nt
3
oscilloscope
1
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405
mascot
26
nosiest
5
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368
osmium
1
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364
handful
311
pick on sb
55
tank
368
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2
conventionality
79
mussel
3
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219
disadvantage
438
engrossing
117
approval
480
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5
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2
president
446
inhabited
134
commissariat
61
masticatory
2
humble
308
oilfield
2
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54
buffoonery
44
mystique
3
nts
3
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343
courtier
70
oa
4
modelling
167
osmosis
1
odious
2
orthopedic
1
nymphomania
4
simplify
421
numberplate
3
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2
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3
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137
generation
441
derogation
43
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3
packed
150
nonpayment
3
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1
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1
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478
organelle
1
hum
196
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numbers
3
guvnor
72
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2
assign
377
typhoon
419
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3
wolf
386
nos
5
statute
441
surprising
431
nozzle
5
Diligent
106
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1
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851
Gun
73
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420
interesting
278
livable
4
quantifier
164
rainy
461
alien
217
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405
preposition
1170
cissy
76
goddess
75
blocking
53
headquarters
748
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266
lightning
353
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88
objectivity
3
seditious
106
nurseries
2
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1
dissect
143
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2
notarized
3
defiant
152
exist
409
custom
381
optometrist
1
median
118
norsemen
3
furnish
322
Bargain
121
norse
5
Wipe
132
conscientiously
3
Somewhat
202
masculinity
53
giant
396
indefinite
343
hearty
87
nullities
3
remote
872
orangeries
1
dazed
191
luxembourger
2
orchidlike
1
brooding
63
cough
408
complex
391
susceptibility
100
clingy
78
noter
4
nookie
4
distracting
117
witness
450
Ignore
180
cornier
37
aware
414
Ukraine
140
pop
398
comeback
157
librarianship
2
Orchard
135
ddt
54
accredit
116
alpine
61
circlet
77
Since
169
space
410
onstage
1
locate
405
objector
2
TRait
73
violet
323
dude-ranch
48
liven
1
Grave
128
nullify
3
opportunities
1
coma
200
fates
36
Burial
48
lop
2
mademoiselle
1
browned
33
gambit
63
nonstarter
5
sight
598
linocut
1
nonaggression
5
noted
5
northerly
4
increasingly
328
repair
405
Wag
138
nosing
4
Valley
119
quantity
438
Arguments thesaurus
95
picket
127
longtime
3
ontology
1
stereotypical
128
carry
788
evening gown
9
laburnum
4
Christianity-topic Christianity
38
onrush
1
ay
21
maintain
462
listener
438
obscurities
3
liable
352
Spider
113
Athletic
118
abject
93
Amended
79
nonreturnable
2
Infirm
27
obeisance
1
colonel
344
nontransferable
3
matriarchy
1
operatorless
1
onesie
1
october
2
novelties
3
maw
3
Comforting
36
chart
390
Cupboard
211
exasperation
147
anomalies
32
submissive
310
Still
160
workflow
70
effective
447
notaries
3
kick
393
drawn
42
numpty
2
name-check
4
contemplation
166
navigationally
4
spider
363
bauhaus
3
Castigate
145
subjugation
21
augury
85
notecard
2
prosperity
388
bring something ↔ out
305
n
4
sweater
344
nylons
1
palace
125
obscurity
1
changeable
86
neologism
2
ULTIMATE
31
fossil fuels
22
punch
372
reclaim
178
confrontation
334
bark
319
unfashionable
139
didactic
119
ghost
417
mint
105
Dowry
61
narrows
5
mayoress
3
cost-plus
72
foghorn
93
new-found
6
nonslip
2
slave
369
TOEFL
IELTS
BNC: 5200
COCA: 5103
Longman Dictionary of Contemporary English
hydrogen
Word family
noun
hydrogenase
hydrogenation
hydrogen bomb
hydrogen
verb
hydrogenate
hydrogenize
adjective
hydrogenated
hydrogenous
Related topics:
Elements
hy
·
dro
·
gen
/
ˈhaɪdrədʒ
ə
n
/
●●○
noun
[
uncountable
U
]
HCE
a
colourless
gas
that is the lightest of all gases, forms water when it
combines
with
oxygen
, and is used to produce
ammonia
and other
chemicals
. It is a chemical
element
:
symbol
H
氢〔一种化学元素,符号为
H
〕
Examples from the Corpus
hydrogen
•
The
transient
nature
of the
binding
may be because this
sequence
is
recognized
on account of its
structure
without
additional
hydrogen
bonding
contacts
.
•
In this case the
presence
of oxygen and
hydrogen
mixed
in the
optimum
proportions
, could well have
compounded
the effect.
•
The
vaporized
gasoline
is processed into
hydrogen
, water and
carbon
dioxide
.
•
Ultraviolet
light,
hydrogen
peroxide
and
ozone
assure
crystal-clear, clean water.
•
For all they know, metal
hydrogen
may always be
unstable
and quickly vaporize.
•
A
biochemist
colleague
has
kindly
provided me with a
bottle
of
hydrogen
peroxide, and enough hydroquinone for 50
bombardier
beetles
.
•
The large
scale
release
of
fusion
energy
has so far
occurred
only in
stars
and in the
hydrogen
bomb
.
•
Expressed
as the proportion of carbon to
hydrogen
, fuelwood is roughly 91 percent carbon.
Origin
hydrogen
(
1700-1800
)
French
hydrogène
, from
hydro-
(
→
HYDRO-
) +
-gène
“
producing
”
; because it produces water when it is burned
hy
·
dro
·
gen
noun
Chinese
Syllable
Corpus
TOEFL
IELTS
BNC: 5200
COCA: 5103
Oxford Collocations Dictionary
TOEFL
IELTS
BNC: 5200
COCA: 5103
Oxford Learner's Thesaurus
TOEFL
IELTS
BNC: 5200
COCA: 5103
Macmillan English Thesaurus
hydrogen
Gases:
acetylene, ammonia, argon...
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