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Materials & Substances — Lesson 11
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عيّنة
ammonia
əˈmoʊniə
a water solution of ammonia
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aniline
ˈænəlɪn
oily poisonous liquid amine obtained from nitrobenzene and used to make dyes and plastics and medicines
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anthracite
ˈænθrəsaɪt
a hard natural coal that burns slowly and gives intense heat
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antibodies
ˌæntaɪˈbɑːdɪz
any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response
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antifreeze
ˈænti.friːz
a liquid added to the water in a cooling system to lower its freezing point
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antigen
ˈæntədʒən
any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)
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antigens
ˈæntɪdʒənz
any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)
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antiknock
ˌæntiˈnɑːk
any of various compounds that are added to gasoline to reduce engine knocking
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antimatter
ˌæntiˈmætər
matter consisting of elementary particles that are the antiparticles of those making up normal substances
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antimony
ˈæntɪmoʊni
a metallic element having four allotropic forms; used in a wide variety of alloys; found in stibnite
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antioxidant
ˌæntiˈɑksɪdənt
substance that inhibits oxidation or inhibits reactions promoted by oxygen or peroxides
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aquamarine
ˌækwəməˈriːn
a transparent variety of beryl that is blue green in color
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