¹ Source: wiktionary.com
Definition of Astroid
1. a four cusped geometrical figure [n -S]
Medical Definition of Astroid
1. Star-shaped. Origin: G. Astroeides, fr. Astron, star, + eidos, resemblance (05 Mar 2000)
Lexicographical Neighbors of Astroid
Literary usage of Astroid
Below you will find example usage of this term as found in modern and/or classical literature:
1. An Elementary Treatise on the Differential Calculus Founded on the Method of by William Woolsey Johnson (1904)
"The Four-cusped Hypocycloid or astroid. 292. The four-cusped hypocycloid may be
generated by a rolling ... This curve is sometimes called the astroid. ..."
2. An Elementary Course of Infinitesimal Calculus by Horace Lamb (1897)
"The volume generated by the revolution of the astroid about the line joining two
opposite cusps is 21. The length of a quadrant of the curve x = a cos2 6, ..."
3. Outlines of Zoology by John Arthur Thomson, Marion Isabel Newbigin (1906)
"<•) astroid stage.—The chromatin elements bend into looped pieces, which are
disposed in ... Coil. ~ Coil. / a Resting stage. Resting stage. % /\ c astroid. ..."
4. Analytic Geometry by Wallace Alvin Wilson, Joshua Irving Tracey (1915)
"In the hypo- cycloid R = 4 r, the- rolling circle makes four revolutions in
passing around the base, forming the astroid, or hypocycloid of four cusps. 128. ..."
5. Outlines of zoology by John Arthur Thomson (1895)
"(regressive changes). a Resting stage. Resting stage. i; 6 Coil. Coil. / i astroid.
... e —^- if Division of astroid and its loops ..."
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