Materials & Substances — Lesson 11

Specimen

ammonia

əˈmoʊniə

a water solution of ammonia

Specimen

aniline

ˈænəlɪn

oily poisonous liquid amine obtained from nitrobenzene and used to make dyes and plastics and medicines

Specimen

anthracite

ˈænθrəsaɪt

a hard natural coal that burns slowly and gives intense heat

Specimen

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

Specimen

antifreeze

ˈænti.friːz

a liquid added to the water in a cooling system to lower its freezing point

Specimen

antigen

ˈæntədʒən

any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)

Specimen

antigens

ˈæntɪdʒənz

any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)

Specimen

antiknock

ˌæntiˈnɑːk

any of various compounds that are added to gasoline to reduce engine knocking

Specimen

antimatter

ˌæntiˈmætər

matter consisting of elementary particles that are the antiparticles of those making up normal substances

Specimen

antimony

ˈæntɪmoʊni

a metallic element having four allotropic forms; used in a wide variety of alloys; found in stibnite

Specimen

antioxidant

ˌæntiˈɑksɪdənt

substance that inhibits oxidation or inhibits reactions promoted by oxygen or peroxides

Specimen

aquamarine

ˌækwəməˈriːn

a transparent variety of beryl that is blue green in color