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cissoid

 - 1 dictionary result

cis⋅soid

  [sis-oid]
Use cissoid in a Sentence
–noun Geometry.
a curve having a cusp at the origin and a point of inflection at infinity. Equation: r = 2a sin(θ)tan(θ).
Origin:
1650–60; < Gk kissoeids, equiv. to kiss(ós) ivy + -oeidēs -oid

Related forms:
cis⋅soi⋅dal, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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