COMMUTATOR
\kˈɒmjuːtˌe͡ɪtə], \kˈɒmjuːtˌeɪtə], \k_ˈɒ_m_j_uː_t_ˌeɪ_t_ə]\
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A device for changing alternating electrical current to direct current, or direct current to alternating current; generally used on a generator or motor.
By William Dodge Lewis, Edgar Arthur Singer
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Elec. A device to change the direction or vary the strength of an electric current in a dynamo, motor, etc.
By James Champlin Fernald
By Willam Alexander Newman Dorland
Word of the day
basidiomycota
- comprises fungi bearing the spores on basidium: Gasteromycetes (puffballs); Tiliomycetes (comprising orders Ustilaginales (smuts) and Uredinales (rusts)); Hymenomycetes (mushrooms; toadstools; agarics; bracket fungi); in some classification systems considered a division of kingdom comprises fungi bearing spores on a basidium; includes Gasteromycetes (puffballs) Tiliomycetes comprising the orders Ustilaginales (smuts) and Uredinales (rusts) Hymenomycetes (mushrooms, toadstools, agarics bracket fungi).