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Meaning of "LD50" in the English dictionary

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DICTIONARY
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PRONUNCIATION OF LD50

LD50  [ˌɛlˌdiːˈfɪftɪ] play
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GRAMMATICAL CATEGORY OF LD50

noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
Ld50 is a noun.
A noun is a type of word the meaning of which determines reality. Nouns provide the names for all things: people, objects, sensations, feelings, etc.

WHAT DOES LD50 MEAN IN ENGLISH?

Median lethal dose

In toxicology, the median lethal dose, LD50, LC50 or LCt50 of a toxin, radiation, or pathogen is the dose required to kill half the members of a tested population after a specified test duration. LD50 figures are frequently used as a general indicator of a substance's acute toxicity. The test was created by J.W. Trevan in 1927. The term semilethal dose is occasionally used with the same meaning, in particular in translations from non-English-language texts, but can also refer to a sublethal dose; because of this ambiguity, it is usually avoided. LD50 is usually determined by tests on animals such as laboratory mice. In 2011 the US Food and Drug Administration approved alternative methods to LD50 for testing the cosmetic drug BOTOX without animal tests.

WORDS THAT RHYME WITH LD50


biosafety
ˌbaɪəʊˈseɪftɪ
clifty
ˈklɪftɪ
drifty
ˈdrɪftɪ
fifty
ˈfɪftɪ
nifty
ˈnɪftɪ
rifty
ˈrɪftɪ
safety
ˈseɪftɪ
shifty
ˈʃɪftɪ
snifty
ˈsnɪftɪ
supersafety
ˌsuːpərˈseɪftɪ
swiftie
ˈswɪftɪ
swifty
ˈswɪftɪ
thrifty
ˈθrɪftɪ
unsafety
ʌnˈseɪftɪ
unthrifty
ʌnˈθrɪftɪ
wifty
ˈwɪftɪ

WORDS THAT BEGIN LIKE LD50

LBO
LBV
lbw
lc
lcd
LCJ
LCL
lcm
LCoS
ld
Ldg
LDL
LDR
LDS
Le
Le Brun
le Cap
Le Cateau
Le Chatelier´s principle
Le Corbusier

Synonyms and antonyms of LD50 in the English dictionary of synonyms

SYNONYMS

Translation of «LD50» into 25 languages

TRANSLATOR
online translator

TRANSLATION OF LD50

Find out the translation of LD50 to 25 languages with our English multilingual translator.
The translations of LD50 from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «LD50» in English.

Translator English - Chinese

LD50
1,325 millions of speakers

Translator English - Spanish

DL50
570 millions of speakers

English

LD50
510 millions of speakers

Translator English - Hindi

LD50
380 millions of speakers
ar

Translator English - Arabic

LD50
280 millions of speakers

Translator English - Russian

LD50
278 millions of speakers

Translator English - Portuguese

DL50
270 millions of speakers

Translator English - Bengali

LD50
260 millions of speakers

Translator English - French

DL50
220 millions of speakers

Translator English - Malay

LD50
190 millions of speakers

Translator English - German

LD50
180 millions of speakers

Translator English - Japanese

LD50
130 millions of speakers

Translator English - Korean

LD50
85 millions of speakers

Translator English - Javanese

LD50
85 millions of speakers
vi

Translator English - Vietnamese

LD50
80 millions of speakers

Translator English - Tamil

எல் டி 50
75 millions of speakers

Translator English - Marathi

एलडी 50
75 millions of speakers

Translator English - Turkish

LD50
70 millions of speakers

Translator English - Italian

LD50
65 millions of speakers

Translator English - Polish

LD50
50 millions of speakers

Translator English - Ukrainian

LD50
40 millions of speakers

Translator English - Romanian

LD50
30 millions of speakers
el

Translator English - Greek

LD50
15 millions of speakers
af

Translator English - Afrikaans

LD50
14 millions of speakers
sv

Translator English - Swedish

LD50
10 millions of speakers
no

Translator English - Norwegian

LD50
5 millions of speakers

Trends of use of LD50

TRENDS

TENDENCIES OF USE OF THE TERM «LD50»

The term «LD50» is regularly used and occupies the 56.061 position in our list of most widely used terms in the English dictionary.
0
100%
FREQUENCY
Regularly used
74
/100
The map shown above gives the frequency of use of the term «LD50» in the different countries.
Principal search tendencies and common uses of LD50
List of principal searches undertaken by users to access our English online dictionary and most widely used expressions with the word «LD50».

FREQUENCY OF USE OF THE TERM «LD50» OVER TIME

The graph expresses the annual evolution of the frequency of use of the word «LD50» during the past 500 years. Its implementation is based on analysing how often the term «LD50» appears in digitalised printed sources in English between the year 1500 and the present day.

Examples of use in the English literature, quotes and news about LD50

EXAMPLES

10 ENGLISH BOOKS RELATING TO «LD50»

Discover the use of LD50 in the following bibliographical selection. Books relating to LD50 and brief extracts from same to provide context of its use in English literature.
1
Chemical Pesticides Mode of Action and Toxicology
2.2.4 LD50 and related parameters The statistical problems in making good dose -response curves can only be overcome by using many organisms in the experiment. A better method may be to determine one dose, for instance, the dose that ...
Jørgen Stenersen, 2004
2
Chemical Warfare Agents: Toxicology and Treatment
Species Route" Term Unit (duration) Tabun Sarin Soman VX Man pc LD50 mgkg- — 28* — — pc LCLO Hgkg"1 — — — 86'' pc LDLO mgkg- 23" — 18" — inhal LDLO mg nr3 150" — 70" — inhal LD50 mg nr3 — 70" — — inhal ECLO H-gnr3 ...
Dr Timothy T. Marrs, Robert L. Maynard, Frederick Sidell, 2007
3
A Textbook of Modern Toxicology
Traditionally, acute oral toxicity testing focused on determining the dose that kills half the animals (i.e., the median lethal dose or LD50), the timing of lethality following acute chemical exposure, as well as observing the onset, nature, severity, ...
Ernest Hodgson, 2011
4
Small Animal Toxicology
The end point of an LD50 study is death, and the published LD50 value says nothing about the severity of clinical signs observed in the surviving animals or the nature of the clinical effects.2-4 Twenty or more animals may be used to arrive at ...
Michael Edward Peterson, Patricia A. Talcott, 2006
5
Introduction to Pharmacology, Third Edition
chose to select the ED50 as a standard index of effectiveness. In the present example, if we apply the same method our drug can be seen to have an LD50 of 100 mg/kg. The LD50 is a routinely utilized index (although not the only one) defined ...
Mannfred A. Hollinger, 2002
6
Building Materials: Dangerous Properties of Products in ...
AMMONIA AMY500 79 ipr-rat LD50: 1 20 mg/kg evssav 2,289,68 ivn-rat LD50: 417 mg/kg 85GMat ,64.82 ims-rat LD50:2 g/kg 85gmat -,64.82 orl-mus LD50: 3550 mg/kg ssgmat ,64,82 orl-rbt LD50: 2 g/kg ssgmat ,64,82 orl-rat LD50:3 g/kg ucds~ ...
H. Leslie Simmons, 1997
7
Chemical Risk Analysis: A Practical Handbook
120051 15151511; - 11rr= 52-11 55-1 11') Tr. 22 (D 1.050 1»1; 2111111.5011111001111.1.1>50 0-m:U€fi LD50 0-111: 631)). LD50 cu-nu > 260120 2.1-Dimcthyilpnapaae-I3-di0l:C,H,;0; - 104.1'! - I26-30-'1' ® Eb = 101-212 ; 121%: 93-9413 ...
Bernard Martel, 2004
8
Alkaloids: Biochemistry, Ecology,and Medicinal Applications
Artificial respiration prevents death. Physostigmine from the African arrow poison plant Physostigma venenosum, immediately given, antagonized all paralytic symptoms. The toxicities (LD50) of the three curare types for mice i.p. are reported to ...
Margaret F. Roberts, Michael Wink, 1998
9
Encyclopedia of Parasitology: A-M
(LD50 percutaneous 860 mg/kg) Because of its relatively low toxicity for bees it is also used as a miticide against Varroa mites in bee hives. Because of its ability to break existing resistance interest in the — >varroatosis treatment with ...
Heinz Mehlhorn, 2008
10
Seafood and Freshwater Toxins: Pharmacology, Physiology, and ...
LD99 400 [218] Pinnatoxin E Swiss albino Female Fed LD50 45.0 (35.0–66.0) [ 206] Pinnatoxin E Swiss albino Female Fed LD50 57.0 (39.7–75.3) [14] Pinnatoxin E Swiss albino Female Fasted LD50 48.0 (33.5–63.5) [14] Pinnatoxin F Swiss ...
Luis M. Botana, 2014

10 NEWS ITEMS WHICH INCLUDE THE TERM «LD50»

Find out what the national and international press are talking about and how the term LD50 is used in the context of the following news items.
1
DEA Issues Rule on Placement of Acetyl Fentanyl on Controlled …
In addition, studies also showed that the range between the effective dose (ED50) and the lethal dose (LD50) of acetyl fentanyl is narrower than that of morphine ... «Targeted News Service, Jul 15»
2
Ryan Wallace: LD50 at Romer Young Gallery
Ryan Wallace: LD50: 11 a.m.-5 p.m. Thursday-Saturday and by appointment Tuesday-Wednesday. Through July 25. Romer Young Gallery ... «SFGate, Jul 15»
3
How to Spot Non-Animal-Friendly Home Products
Current ones include the LD50 test (which proves how much of a product is needed to kill 50 percent of the animals it is tested on) and the ... «Care2.com, Jul 15»
4
Deadly Deer Pee?
But scientifically this is the best we have to this point. The researchers found that 50 percent of lethal dose (LD50) for infected deer urine was 10 ... «Outdoor Channel, Jul 15»
5
Evaluation of phytochemical content, antimicrobial, cytotoxic and …
Illustration of % age mortality of brine shrimps at different concentrations of extract and fractions and respective LD50 values. Antitumor potato ... «BMC Blogs Network, Jul 15»
6
Tetrahydrocannabinol in milk and other food of animal origin
The oral LD50 for rats and mice were 666 mg Δ9-THC/kg and 482 mg Δ9-THC/kg, respectively. In repeated dose toxicity studies in rats, findings ... «Teatro Naturale, Jun 15»
7
7-Keto DHEA The Fat-Burning Metabolite of DHEA
Toxicology studies have revealed that this level of supplementation is very safe.4 A "LD50" study in rats (used to determine the dose at which ... «ProHealth, Jun 15»
8
Acrylamide in Food; Scientific Opinion provided by the European …
Oral LD50 values for AA were reported to be > 150 mg/kg b.w. for rats, 107 mg/kg b.w. for mice, and 150–180 mg/kg b.w. for rabbits and guinea ... «PotatoPro, Jun 15»
9
Laser Contrast Sensor
Out of the box, the Q3X LD50 operates like a fixed-field laser sensor and detects targets within its 50 mm sensing range. However, the sensor ... «Quality Magazine, May 15»
10
DMT: The Enigmatic Alkaloid
The ld50 of dmt is 110mg per kg. He would have had to ingest alot! Its more likely he did a derivitave of nn dmt called 5meodmt which is far ... «Daily Nexus, May 15»

REFERENCE
« EDUCALINGO. Ld50 [online]. Available <https://educalingo.com/en/dic-en/ld50>. Apr 2024 ».
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