trochoidal, a.
(trəʊˈkɔɪdəl)
[f. prec. + -al1.]
1. Geom. Having the form or nature of a trochoid; pertaining or relating to trochoids: see prec. A. 1.
| 1799 Young in Phil. Trans. XC. 137 A similar chord bent into a trochoidal curve. 1861 W. Froude Rolling of Ships (1862) 23 The wave would be more accurately represented by some member of the cycloidal or trochoidal family than by the curve of sines. |
2. Conch. = trochoid B. 2. rare—0.
| 1891 in Cent. Dict. |
3. Anat. = trochoid B. 3. rare.
| 1882 Ogilvie (Annandale) s.v. Trochoid, A trochoidal articulation. |
Hence troˈchoidally adv., in a trochoidal manner or course.
| 1855 De Morgan in Graves Life Sir W. R. Hamilton (1889) III. 519 A book..showing that the earth moves trochoidally if the sun has motion. |