SURFACE OF REVOLUTION
\sˈɜːfɪs ɒv ɹˌɛvəlˈuːʃən], \sˈɜːfɪs ɒv ɹˌɛvəlˈuːʃən], \s_ˈɜː_f_ɪ_s ɒ_v ɹ_ˌɛ_v_ə_l_ˈuː_ʃ_ə_n]\
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(Math.) The surface of the solid space traced out by the revolution of a plane area round an axis in its plane ; as a cone by a right-angled triangle revolving round its perpendicular ; an anchor-ring by a circle, round an axis which does not cut it, etc.
By Henry Percy Smith
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).