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- off-the-shelf 26
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- Earlier 51
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- AWE 10
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- exponent 42
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- armorial 7
- whip 308
- louche 59
- bring on 45
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- huskiest 3
- anagram 41
- mist 386
- worldwide 466
- brilliant 357
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- harvestable 3
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- etc. 47
- insurability 3
- parlourmaid 3
- exert 297
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- bet 361
- serious 343
- occasion 437
- decided 129
- alloying 1
- interfamily 3
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- cupolated 5
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- hornbeam 4
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- countable 107
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- at length 40
- blossom 323
- remote 1341
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- marijuana 5
- mental 294
- security guard 5
- encroach 118
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- license 515
- ground cloth 32
- pianoforte 4
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- beat 216
- bloodcurdling 46
- force 356
- constraint 65
- Revise 129
- mercantilism 3
- papaw 4
- persuasion 356
- Celebrity 56
- assistantship 4
- incurred 3
- juice 60
- frogging 2
- indispensable 408
- Complex 80
- pollute 305
- Bloc 135
- overlong 5
- clinical 167
- protective 291
- brontosaurus 51
- cinnamon 58
- ing 2
- drill 264
- juniper 33
- fluoridation 29
- photostat 4
- Illegal 127
- diatomic 3
- rope 344
- millinery 2
- manageress 1
- invitational 4
- Kitchen 46
- entrance hall 28
- NORM 28
- decagon 2
- hob 3
- larvicide 3
- altogether 294
- irreducible 4
- Entitled 35
- scissors 357
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- ontologist 2
- hubris 73
- Milk 151
- whine 193
- Frost 10
- piggeries 3
- censurable 22
- drag 267
- award 349
- aquatics 1
- wireless 321
- fundamental 369
- epicenter 136
- briefing 127
- metatheses 2
- interiorize 2
- lost 226
- toss 314
- swoon 57
- overshoot 94
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- Disapproval 85
- effusive 53
- Jersey 82
- double-digit 38
- meridian 5
- knickerbocker 4
- mirror 321
- drawing 319
- Reputation 144
- medicine 126
- comestible 3
- tendency 355
- boat hook 6
- Basement 55
- debar 64
- solution 369
- lethe 4
- associate 317
- Infected 109
- media 329
- harden 342
- existential 72
- inclusivity 39
- proportion 331
- SCOLD 30
- chadless 4
- hms 32
- farewell 349
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- bioethanol 8
- Drug 166
- malicious 47
- giraffe 53
- dominica 26
- mint 105
- Mortise 70
- clemency 59
- terrain 168
- clinch 100
- perturbational 2
- autogenous 3
- fee 336
- onerous 3
- scammer 28
- along 128
- maharajah 2
- nerd 28
- Talkative 36
- dagged 4
- paradisial 3
- successful 400
- ojibwa 2
- thresh 122
- Brussels sprout 40
- comedic 42
- birder 8
- parabolic 3
- faith 360
- radium 271
- volume 327
- bulimia 40
- coming-of-age 29
- copsy 2
- conspiracy theory 38
- jp 2
- icymi 2
- overspend 3
- doggo 2
- fumigator 32
- fountain 300
- americano 23
- bilingualism 51
- iniquities 3
- martyrdom 5
- Valley 28
- downstairs 492
- commence 139
- Fever 128
- mst 2
- German 306
- amnesty 169
- stupid 318
- photo 3
- magazine 340
- Italicize 47
- ellipse 45
- mobster 5
- southern 306
- drear 1
- jabberwocky 2
- Steady 127
- occupancy 82
- Defensive 134
- intergovernmental 5
- dream 300
- FDA 24
- HOBBY 30
- Civvy 15
- sparkle 352
- vagabond 149
- hemp 6
- Address 130
- misfile 2
- stream 340
- Try 69
- faculty 364
- brighten 324
- Knob 112
- chat up 32
- safe 297
- best-selling 29
- worked up 16
- Gen 83
- material 337
- Difficulty 178
- data 315
- sniff 205
- japing 2
- crepe paper 21
- carpetbagger 49
- likelihood 309
- honor 170
- indent 7
- fraction 291
- wiretap 194
- breakfast 49
- trousers 282
- dript 3
- hes 4
- kleptomania 2
- gat 1
- Exposed 105
- packaging 6
- pigged 2
- bradley 6
- guidepost 3
- aneroid 7
- laurelled 4
- erection 63
- lest 274
- pah 4
- mo 7
- Tend 117
- deviancy 28
- ravage 156
- authorities 39
- gliding 21
- mity 2
- microfinance 4
- Mister 308
- histrionics 4
- stab 297
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- custodial 42
- courtesies 16
- wrongdoing 90
- required 88
- storage 277
- complete 379
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- sour 353
- hunt 338
- coast 533
- harm 301
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- torrent 327
- board game 28
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- camomile 38
- Dive 22
- bandleader 148
- shallowly 96
- moveable 4
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- Verse 36
- style 366
- Potential 145
- nameable 4
- fishing 56
- inventor 244
- massless 3
- epistle 37
- deepen 270
- eagerness 35
- nefarious 95
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- indefinite 295
- late 136
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- contender 59
- intensifier 4
- regimen 126
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- scientific 322
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- thumb 340
- Grader 56
- over the top 46
- membrane 3
- partisanship 2
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- insinuatingly 3
- parlay 5
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- dob 34
- wry 109
- although 258
- expenditure 273
- anthraces 3
- keynoter 4
- Tapestry 46
- interdict 3
- parley 5
- infants 14
- broadsword 7
- copy 152
- pervading 3
- Have 117
- video 351
- dodgy 65
- onset 131
- pond 322
- Upswing 43
- fool around 46
- Culprit 167
- Page 41
- Proud 137
- aftermost 6
- merit 462
- verily 57
- midriff 3
- ancient 290
- harold 3
- Unfiltered 4
- ablation 7
- ear 143
- theatrical 115
- midlife 2
- parboil 5
- Erupt 145
- reasonable 292
- craw 42
- battery 328
- folklore 54
- Architect 112
- Shameful 121
- giantism 3
- midtown 2
- modicum 3
- Pig 119
- aim 365
- peekaboo 4
- inner 328
- Beach 83
- Alert 137
- mocks 2
- philter 5
- Add 75
- butter 336
- mud 317
- governess 52
- ex 231
- subscribe 239
- digraph 4
- bestirring 2
- code-name 31
- ph 6
- onboard 3
- pack off 27
- scare 275
- honer 3
- microfilm 3
- perpetuities 5
- hater 5
- multimillion 4
- goog 5
- gen 45
- aggregate 274
- Thumb 167
- florentine 3
- race 399
- supervisor 66
- phreaking 3
- mangel 2
- gas ring 28
- parodied 2
- recorder 354
- Easy 134
- manhole 3
- double glazing 40
- oxfam 5
- achieve 334
- candy 308
- email 108
- accompanying 44
- latest 55
- anaemia 40
- mahout 3
- pallid 3
- bewigged 4
- phototoxicity 2
- petted 3
- memsahib 3
- pea 359
- kitties 4
- ideologically 87
- brackish 65
- interaction 304
- fin 69
Did you know?
When scientists first used fissile back in the 1600s, the notion of splitting the nucleus of an atom would have seemed far-fetched indeed. In those days, people thought that atoms were the smallest particles of matter that existed and therefore could not be split. Fissile (which can be traced back to Latin findere, meaning "to split" or "to cleave") was used in reference to things like rocks. When we hear about fissile materials today, the reference is usually to nuclear fission: the splitting of an atomic nucleus that releases a huge amount of energy. But there is still a place in our language for the original sense of fissile (and for the noun fissility, meaning "the quality of being fissile"). A geologist, for example, might refer to slate as being fissile.
Example Sentences
Recent Examples on the Web This was eliminated in the final draft which calls for the immediate start of negotiations on a treaty banning production of fissile material. 
Edith M. Lederer, ajc, 26 Aug. 2022 Most atoms do not fission, but the isotopes of certain elements, such as uranium-235, are fissile. Washington Post, 28 Apr. 2022 But given Iran’s advancements since the original deal, Tehran is currently enriching uranium at up to 60 percent purity, producing uranium metal, and hiding stockpiles of fissile material from the IAEA. The Editors, National Review, 4 Mar. 2022 This is the ability to put enough pressure on the fissile material to detonate it and create a nuclear yield. CBS News, 5 Jan. 2022 The nation’s output of uranium—a fissile material for nuclear weapons when enriched—is just a fraction of what could be produced, according to new research from Stanford University’s Center for International Security and Cooperation. Timothy W. Martin, WSJ, 4 Nov. 2021 And this means that Iran can distribute this capacity to a place that might be difficult to attack, difficult to discover and would allow Iran to quickly develop the fissile material for a weapon. CBS News, 3 Nov. 2021 Th-232 captures a neutron and converts to U-233 which is also fissile and begins providing more neutrons and more power. James Conca, Forbes, 6 Oct. 2021 The North’s production of fissile materials violates multiple resolutions from the UN Security Council, which has sought to stop the country from developing nuclear warheads, with little success. BostonGlobe.com, 30 Aug. 2021 See More
Edith M. Lederer, ajc, 26 Aug. 2022 Most atoms do not fission, but the isotopes of certain elements, such as uranium-235, are fissile. Washington Post, 28 Apr. 2022 But given Iran’s advancements since the original deal, Tehran is currently enriching uranium at up to 60 percent purity, producing uranium metal, and hiding stockpiles of fissile material from the IAEA. The Editors, National Review, 4 Mar. 2022 This is the ability to put enough pressure on the fissile material to detonate it and create a nuclear yield. CBS News, 5 Jan. 2022 The nation’s output of uranium—a fissile material for nuclear weapons when enriched—is just a fraction of what could be produced, according to new research from Stanford University’s Center for International Security and Cooperation. Timothy W. Martin, WSJ, 4 Nov. 2021 And this means that Iran can distribute this capacity to a place that might be difficult to attack, difficult to discover and would allow Iran to quickly develop the fissile material for a weapon. CBS News, 3 Nov. 2021 Th-232 captures a neutron and converts to U-233 which is also fissile and begins providing more neutrons and more power. James Conca, Forbes, 6 Oct. 2021 The North’s production of fissile materials violates multiple resolutions from the UN Security Council, which has sought to stop the country from developing nuclear warheads, with little success. BostonGlobe.com, 30 Aug. 2021 See More Word History
Etymology
borrowed from Latin fissilis "easily split," from fid-, variant stem of findere "to split, cleave" + -tilis "subject to, susceptible to (the action of the verb)" — more at bite entry 1
First Known Use
1661, in the meaning defined at sense 1
Time Traveler
The first known use of fissile was in 1661 👨🏻🏫 Mr. Ng 韋氏詞典 📚 – mw.mister5️⃣.net
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