| 释义 |
prismoid, n. (a.)|ˈprɪzmɔɪd|
[= F. prismoïde, f. prisme prism: see -oid.]
1. A body approaching in form to a prism, with similar but unequal parallel polygonal bases.
1704J. Harris Lex. Techn. I, Prismoid, is a solid Figure, contained under several Planes whose Bases are rectangular Parallelograms, parallel and alike situate. 1743Emerson Fluxions 208 Let BF be a Prismoid, whose Bases are right angled Parallelograms, though not similar. 1837W. Irving Capt. Bonneville (1849) 317 In this neighborhood, he saw..several prismoids of basaltes, rising to the height of fifty or sixty feet. 1870Tracy in Eng. Mech. 28 Jan. 489/1 The greater end of a prismoid measures 12 in. by 8.
2. (See quot.)
1895Syd. Soc. Lex., Liquid prismoid, J. Thompson's name for the refracting watery fluid found in the corneal reflexion of the conjunctiva of the eye. [Also called] watery prismoid.
B. adj. rare. = next.
1840E. Wilson Anat. Vade M. (1842) 1 The shaft is cylindrical or prismoid in form. Ibid. 64 The shaft of the bone is prismoid at its upper part, and flattened from before backwards below. |