🔍 牛津詞典
🔍 朗文詞典
🔍 劍橋詞典
🔍 柯林斯詞典
🔍 麥美倫詞典
🔍 韋氏詞典 🎯
檢索以下詞典：
(Mr. Ng 不推薦使用 Google 翻譯！)
最近搜尋：
- cramped 86
- maize 1
- patrimony 38
- rarely 288
- monumental 97
- paraglide 4
- exorbitantly 65
- centrist 56
- cranky 66
- chaste 42
- effect 391
- biden 2
- good day 25
- dna 31
- outdoor 295
- sunfish 45
- obstruct 298
- sense 313
- missing 310
- piccolo 5
- changing room 38
- biology 313
- disenchantment 36
- bench 354
- dicotyledonous 4
- barrow boy 31
- shortcake 23
- Manifest 112
- precision 343
- executive order 44
- projectile 92
- animate 67
- dismayful 4
- golliwogg 4
- courseware 37
- Memento 1
- noteworthy 20
- phantasm 5
- crepe 44
- afterward 284
- rationing 39
- Epigram 96
- fierceness 74
- overdid 1
- cowhide 51
- Ear 144
- slap 159
- contingency 86
- hatred 317
- getaway 176
- altar 63
- stock 392
- flutter 266
- Upcoming 52
- microdot 4
- beaten-up 46
- first-time 37
- cereal 63
- unduly 2
- eurotrash 3
- investigatory 4
- costlier 16
- Resurgent 41
- swarm 333
- philadelphia 32
- buoyancy 54
- mellow 59
- go back to 39
- Anchor 55
- move 184
- antedate 40
- lesson 126
- january 2
- handmade 52
- downtrend 25
- Tell 156
- sterile 79
- sham 46
- influence 399
- decilitre 23
- dignified 163
- Membership 112
- Village 121
- glimpse 332
- character actor 97
- good-for-nothing 31
- apply 377
- dagger 59
- Translucent 111
- hippopotamus 55
- identical 369
- beloved 313
- toilet 382
- jumble 129
- CONTEND 31
- molester 43
- unseemly 127
- gawk 54
- purse 311
- Freeway 78
- reintroduce 33
- agape 53
- gangrene 190
- Ballast 78
- Mediterranean 230
- Ace 281
- caste 69
- apprize 3
- marker 2
- goldilocks 2
- Types 12
- Pope 77
- esperanto 25
- crucial 409
- berry 303
- fleecy 128
- doodah 33
- jigsaw 35
- drop 320
- mon 1
- insubordinate 21
- skeleton 77
- dog 129
- Lettuce 57
- footstep 320
- tempt 373
- GRIT 31
- rebellion 347
- Escalator 78
- code-name 32
- barracuda 42
- scrubber 135
- aloe vera 34
- amazement 66
- defensible 92
- bring 125
- arrangement 332
- current events 50
- sandal 12
- dredge up 26
- horseshoeing 2
- map 229
- athletics 98
- Cater to 24
- Savior 26
- freshman 42
- Dazzling 25
- ooziest 3
- flanging 1
- inkling 41
- insubordination 11
- blitz 50
- notion 417
- gavel 53
- black pudding 28
- humpless 5
- lamp 317
- react 342
- panacea 153
- granary 54
- claustrophobic 56
- hcf 4
- Paramount 93
- elliptical 55
- hinterland 2
- restraint 324
- Resonate 40
- architecture 345
- mirrored 42
- pleasurable 107
- image 378
- Support 41
- knowledge 324
- Invigilator 48
- broil 40
- undercover 25
- unaware 161
- potentially 148
- attire 157
- gunfight 50
- diffident 47
- Narrow 122
- repent 353
- fulminate 157
- Pram 66
- indestructible 98
- cow 360
- discontinuing 20
- sanction 91
- grow out 34
- adapt 396
- relate to 46
- invalidism 5
- mustachioed 2
- clutter 157
- squeeze 333
- hippodrome 2
- millipede 3
- doorplate 43
- Rush 105
- intimacy 95
- probe 197
- Devote 169
- inquiries 5
- depended 35
- frequently 279
- drapery 43
- discourage 357
- disenchanted 46
- durham 3
- Qatar 94
- heliograph 3
- dilapidate 2
- classy 90
- Conveniently 34
- dine 177
- cooker 54
- writ 215
- Poisoning 131
- cold snap 24
- radicalize 143
- Surge 156
- justify 309
- gladiatorship 1
- cue 309
- Punctual 37
- Demanding 55
- hazardous 164
- chico 1
- fortune cookie 34
- Tempting 121
- anting 8
- kiwis 5
- fadeless 26
- purple 346
- extrude 52
- fiddley 27
- fin 71
- abductee 99
- Adequate 111
- brutalize 153
- Liaison 66
- lacunate 3
- bazaar 116
- arbitrator 34
- atishoo 38
- go under 26
- conservatism 76
- Made 61
- manipulative 3
- indifferent 324
- anne 2
- blabbermouth 39
- fishable 24
- sleepy 344
- cheerio 51
- graft 58
- inspiration 124
- downhill 25
- window 74
- hobber 1
- Unquenchable 16
- narrow 440
- slightly 239
- upstanding 34
- procurement 89
- paratha 4
- inflatable 1
- geologian 2
- shearer 8
- chickenpox 31
- peopler 3
- hangnail 4
- alkali 48
- bare-bones 31
- Print 71
- complicated 314
- indoors 271
- Saskatchewan 36
- Competitive 116
- Materialistic 43
- Bristol 2
- my 53
- amusement 184
- fallacies 19
- Parliament 93
- clitic 3
- indianapolis 2
- line 378
- Media 59
- yearly 296
- drum into 38
- hallway 63
- immolation 1
- waste 340
- pathos 3
- hoicks 2
- clacker 16
- constrain 128
- display 377
- clearstory 4
- Versatile 101
- hectare 2
- Mangrove 97
- news 175
- obstacle 390
- Gaffe 58
- morale 122
- ohms 1
- assail 66
- rouse 294
- Virus 136
- vapor 163
- county town 49
- initial 290
- wobbly 155
- Embarked 22
- fripperies 25
- unannounced 101
- drugless 2
- overhead 317
- mediaeval 1
- standout 94
- real 315
- pigheaded 5
- kludge 2
- thumb 341
- live stream 67
- employ 388
- partygoer 3
- Downhill 85
- another 112
- dogey 2
- abeyance 61
- entrails 51
- mainstreaming 4
- electric 305
- homey 6
- clive 5
- misprint 2
- nosh 4
- driving licence 54
- excepting 51
- Italian 267
- especially 267
- envelop 64
- Rattle 83
- exclude 331
- compensate 146
- bug 86
- rule 438
- connect up 43
- hookup 3
- sheath 10
- meg 2
- alibi 106
- executive 377
- hemisphere 102
- phishing 4
- bikini 58
- chicken 339
- hereof 5
- Rewarding 60
- drearihood 2
- hacking jacket 23
- bear market 26
- scooter 58
- Various 100
- ecologist 32
- farrier 45
- Comparative 36
- obsess 64
- recommendation 348
- go without 32
- phagocyte 4
- grantor 27
- signature 350
- hurrier 3
- system 387
- liege 2
- anaphora 36
- midge 4
- overzealous 3
- fist 307
- entomology 57
- Section 56
- softly 252
- double-parking 26
- attachment 149
- catchup 30
- prophetic 165
- gullible 89
- dirgelike 17
- bind 328
- dismantle 59
- derring-do 35
- first cousin 30
- swing 354
- contract out 46
- business 387
- eye 317
- buddy 82
- Atmosphere 62
- desertification 39
- minimum 334
- cot 131
- a 166
- puritanical 29
- methought 2
- diode 42
- Relish 63
- proceed 367
- inflation 154
- shelter 326
- Redeem 93
- colonisation 56
- muscleman 4
- Class 95
- heedless 3
- patented 82
- chaffingly 3
- audiology 6
- affordably 23
- Pocketbook 129
- condo 39
- thread 338
- mortalize 5
- foldaway 29
- seldom 269
- eighth 44
- collectivity 48
- Obscure 152
- eurhythmics 3
- brogue 46
- teaspoon 96
- migration 129
- stand by 29
- corresponding 287
- golliwog 37
- bumble 31
- cheesecake 47
- articulated 46
- ordure 3
- acrylic 90
- goings-over 24
- tolerate 409
- movement 379
- fat cat 34
- haft 5
- alcoholic 83
- petrel 2
- tram 297
- Neat 144
- irrational 172
- Region 123
- WORTH 70
- parlormaid 2
- amuse 343
- pronoun 329
- funky 65
- sex object 11
- Disappointed 79
- incorporeal 3
- cwm 3
- courtliest 17
- iciness 2
- narrational 1
- know your stuff 13
- diminutive 82
- thick 329
- republican 240
- jackson 3
- chronic 126
- esthetics 25
- seepage 47
- flustered 81
- SIMULATE 49
- monk 4
- behavior 322
- pettier 4
- morrow 4
- Acclaim 185
- grandeur 110
- papergirl 3
- detrain 32
- drive-through 31
- Weaponry 70
- dowager 47
- dreg 40
- chatham 2
- fratricide 51
- pebble 269
- building 161
- absorbed 49
- icu 7
- overdriven 6
- catharsis 34
- large 146
- crude 312
- parvenue 3
alkaloid
noun
al·ka·loid ˈal-kə-ˌlȯid 
: any of numerous usually colorless, complex, and bitter organic bases (such as morphine or caffeine) containing nitrogen and usually oxygen that occur especially in seed plants and are typically physiologically active
Example Sentences
Recent Examples on the Web The user inhales nicotine, an addictive alkaloid present in tobacco, and exhales aerosol. 
Robert Langreth, Bloomberg.com, 23 June 2022 The plant’s tuber, commonly used in traditional Chinese medicine, contains the potentially toxic alkaloid tetrahydropalmatine, according to officials. Dan Adams, BostonGlobe.com, 12 Aug. 2022 Even small amounts of the plant can lead to death due to highly toxic piperidine alkaloid compounds that cause respiratory failure. Camille Fine, USA TODAY, 30 June 2021 When Into the Wild came out a few years later, Krakauer changed his theory: McCandless had eaten seeds from the wild potato plant, and those seeds contained a toxic alkaloid called swainsonine. Diana Saverin, Outside Online, 7 May 2016 The same was done for the remains of Mario, and this time the experts did find evidence of lethal amounts of morphine and delphinine (two toxic plant alkaloids), as well as an opium alkaloid called narceine in the viscera and urine. Jennifer Ouellette, Ars Technica, 2 Jan. 2022 The next step for Odom, according to Zapolin, was to take a trip to Mexico to do ibogaine, a powerful alkaloid derived from the root of a shrub native to Gabon that has been shown to help interrupt opioid dependence. Amanda Siebert, Forbes, 21 Dec. 2021 The couple went to one of the treatment centers in Baja California that offer an underground therapy using ibogaine, a highly potent alkaloid traditionally extracted from the root of a plant native to Gabon in Africa. San Diego Union-Tribune, 11 Sep. 2021 Cytisinicline, a plant-based, naturally occurring alkaloid structurally similar to nicotine, has been shown to aid in smoking cessation. Bryan W. Heckman, Scientific American, 26 Aug. 2021 See More
Robert Langreth, Bloomberg.com, 23 June 2022 The plant’s tuber, commonly used in traditional Chinese medicine, contains the potentially toxic alkaloid tetrahydropalmatine, according to officials. Dan Adams, BostonGlobe.com, 12 Aug. 2022 Even small amounts of the plant can lead to death due to highly toxic piperidine alkaloid compounds that cause respiratory failure. Camille Fine, USA TODAY, 30 June 2021 When Into the Wild came out a few years later, Krakauer changed his theory: McCandless had eaten seeds from the wild potato plant, and those seeds contained a toxic alkaloid called swainsonine. Diana Saverin, Outside Online, 7 May 2016 The same was done for the remains of Mario, and this time the experts did find evidence of lethal amounts of morphine and delphinine (two toxic plant alkaloids), as well as an opium alkaloid called narceine in the viscera and urine. Jennifer Ouellette, Ars Technica, 2 Jan. 2022 The next step for Odom, according to Zapolin, was to take a trip to Mexico to do ibogaine, a powerful alkaloid derived from the root of a shrub native to Gabon that has been shown to help interrupt opioid dependence. Amanda Siebert, Forbes, 21 Dec. 2021 The couple went to one of the treatment centers in Baja California that offer an underground therapy using ibogaine, a highly potent alkaloid traditionally extracted from the root of a plant native to Gabon in Africa. San Diego Union-Tribune, 11 Sep. 2021 Cytisinicline, a plant-based, naturally occurring alkaloid structurally similar to nicotine, has been shown to aid in smoking cessation. Bryan W. Heckman, Scientific American, 26 Aug. 2021 See More Word History
First Known Use
1820, in the meaning defined above
Time Traveler
The first known use of alkaloid was in 1820 👨🏻🏫 Mr. Ng 韋氏詞典 📚 – mw.mister5️⃣.net
切換為繁體中文