frustoconical
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frustoconical — frus·to·conical … English syllables
frustoconical — |frə(ˌ)stō+ adjective Etymology: frustum + o + conical : of the shape of a frustum of a cone … Useful english dictionary
Rim (wheel) — The rim is the outer circular design of the metal on which the inside edge of the tire is mounted on vehicles such as automobiles. [ [http://www.motorera.com/dictionary/RI.HTM#Rim Rim as defined by the Dictionary of Automobile Terms, undated] ,… … Wikipedia