PYRETHRIN

Meaning of PYRETHRIN in English

[py.re.thrin] n [ISV, fr. L pyrethrum] (1924): either of two oily liquid esters having insecticidal properties and occurring esp. in the flowers of pyrethrum

Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012

PYRETHRIN — noun Etymology: International Scientific Vocabulary, from Latin pyrethrum Date: 1871 either of two oily liquid esters C 21 H 28 …
Толковый словарь английского языка - Merriam Webster
PYRETHRIN — pīˈrēthrə̇n also -reth- noun ( -s ) Etymology: International Scientific Vocabulary pyrethr- (from New Latin Pyrethrum ) + -in; originally …
Webster's New International English Dictionary
PYRETHRIN — (n.) A substance resembling, and isomeric with, ordinary camphor, and extracted from the essential oil of feverfew; -- called also …
Английский словарь Webster
PYRETHRIN — ( n. ) A substance resembling, and isomeric with, ordinary camphor, and extracted from the essential oil of feverfew; -- …
Webster's Revised Unabridged English Dictionary
PYRETHRIN — /puy ree"thrin, -reth"rin/ , n. Chem. 1. Also called pyrethrin I . a viscous, water-insoluble liquid, C 21 H 28 …
Random House Webster's Unabridged English Dictionary
PYRETHRIN — n. chemical compound used as an insecticide
Толковый словарь английского языка - Редакция bed
PYRETHRIN — noun Etymology: International Scientific Vocabulary, from Latin pyrethrum Date: 1871 : either of two oily liquid esters C 21 H …
Merriam-Webster's Collegiate English vocabulary
PYRETHRIN — noun a substance resembling, and isomeric with, ordinary camphor, and extracted from the essential oil of feverfew; called also …
Webster English vocab
PYRETHRIN — [ pʌɪ'ri:θrɪn ] ■ noun Chemistry any of a group of insecticidal compounds present in pyrethrum flowers. Derivatives pyrethroid noun
Concise Oxford English vocab
PYRETHRIN — pyrethrin BrE AmE paɪ ə ˈriːθ rɪn § \ -r ə n -ˈreθ-
Longman Pronunciation English Dictionary
PYRETHRIN — n. any of several active constituents of pyrethrum flowers used in the manufacture of insecticides.
Английский основной разговорный словарь
PYRETHRIN — n. any of several active constituents of pyrethrum flowers used in the manufacture of insecticides.
Concise Oxford English Dictionary
PYRETHRIN — n. any of several active constituents of pyrethrum flowers used in the manufacture of insecticides.
Oxford English vocab
PYRETHRIN — n. Pronunciation: p ī - ' r ē -thr ə n, - ' re- Function: noun Etymology: International Scientific Vocabulary, …
Merriam Webster Collegiate English Dictionary
PYRETHRIN AND PIPERONYL BUTOXIDE — MedMaster
Drug information English vocab
RID — MedMaster - Pyrethrin and Piperonyl Butoxide USP DI - Pyrethrins and Piperonyl Butoxide (Topical)
Drug information English vocab
R C — MedMaster - Pyrethrin and Piperonyl Butoxide
Drug information English vocab
PRONTO — MedMaster - Pyrethrin and Piperonyl Butoxide
Drug information English vocab
END LICE — MedMaster - Pyrethrin and Piperonyl Butoxide
Drug information English vocab
RESMETHRIN — noun Etymology: res- (probably transposed from ester) + -methrin, blend of methyl and -ethrin (as in pyrethrin) Date: 1971 a …
Толковый словарь английского языка - Merriam Webster
PYRETHROID — noun Etymology: pyrethrin + -oid Date: 1949 any of various synthetic compounds that are related to the pyrethrins and resemble …
Толковый словарь английского языка - Merriam Webster
PERMETHRIN — noun Etymology: per- + methyl + pyrethrin Date: 1976 a synthetic pyrethroid C 21 H 20 Cl 2 O 3 …
Толковый словарь английского языка - Merriam Webster
ALLETHRIN — noun Etymology: allyl + pyrethrin Date: 1950 a light yellow viscous oily synthetic pyrethroid insecticide C 19 H 26 O …
Толковый словарь английского языка - Merriam Webster
PYRETHRUM — Any of certain plant species of the genus Chrysanthemum (see chrysanthemum ) native to South Asia, whose aromatic flower heads, …
Английский словарь Британика
CHRYSANTHEMUMIC ACID — (|) ̷ ̷| ̷ ̷ ̷ ̷|məmik- noun Etymology: New Latin Chrysanthemum + English -ic : an acid C 9 H 15 COOH that occurs in …
Webster's New International English Dictionary
CHRYSANTHEMUM-DICARBOXYLIC ACID — noun : an acid C 10 H 14 O 4 derived from chrysanthemumic acid that occurs in the form of …
Webster's New International English Dictionary
PERMETHRIN — n. synthetic pyrethrin used as an insecticide and to treat tick and lice infestation (Chemistry)
Толковый словарь английского языка - Редакция bed
RESMETHRIN — noun Etymology: res- (probably transposed from ester ) + -methrin, blend of methyl and -ethrin (as in pyrethrin ) Date: …
Merriam-Webster's Collegiate English vocabulary
PIPERONYL BUTOXIDE — noun Etymology: piperon al + -yl + but yl + oxide Date: 1945 : an insecticide C 19 H 30 …
Merriam-Webster's Collegiate English vocabulary
PYRETHROID — [py.re.throid] n [pyrethrin + -oid] (1949): any of various synthetic compounds that are related to the pyrethrins and resemble them …
Merriam-Webster English vocab
PERMETHRIN — [per.meth.rin] n [per- + methyl + pyrethrin] (1976): a synthetic pyrethrin used esp. as an insecticide
Merriam-Webster English vocab
ALLETHRIN — [al.le.thrin] n [allyl + pyrethrin] (1950): a light yellow viscous oily synthetic insecticide used esp. in household aerosols
Merriam-Webster English vocab

Merriam-Webster English vocab

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