trochoids
plural of trochoid
• doctorish
Source: Wiktionary
Tro"choid, n. Etym: [Gr. -oid; cf. F. trochoïde. See Troche.] (Geom.)
Definition: The curve described by any point in a wheel rolling on a line; a cycloid; a roulette; in general, the curve described by any point fixedly connected with a moving curve while the moving curve rolls without slipping on a second fixed curve, the curves all being in one plane. Cycloids, epicycloids, hypocycloids, cardioids, etc., are all trochoids.
Tro"choid, a.
1. (Anat.)
Definition: Admitting of rotation on an axis; -- sometimes applied to a pivot joint like that between the atlas and axis in the vertebral column.
2. (Zoöl.)
Definition: Top-shaped; having a flat base and conical spire; -- said of certain shells.
3. (Zoöl.)
Definition: Of or pertaining to the genus Trochus or family Trochidæ.
Source: Webster’s Unabridged Dictionary 1913 Edition
11 April 2025
(noun) cheap paper made from wood pulp and used for printing newspapers; “they used bales of newspaper every day”
According to Guinness World Records, on 25 September 2016, the Birla Institute of Management Technology (India) in Uttar Pradesh, India, constructed the largest coffee cups pyramid consisting of 23,821 cups. They used paper takeaway coffee cups to build the pyramid.
