Definition of

Cactus

  1. (noun, plant) any succulent plant of the family Cactaceae native chiefly to arid regions of the New World and usually having spines

via WordNet, Princeton University

Origin of the word Cactus

  1. c.1600, from L. cactus "cardoon," from Gk. kaktos, name of a type of prickly plant of Sicily (the Spanish artichoke), perhaps of pre-Hellenic origin. Modern meaning is 18c., because Linnaeus gave the name to a group of plants he thought were related to this but are not. more

via Online Etymology Dictionary, ©2001 Douglas Harper

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Par Value

the value of a security that is set by the company issuing it; unrelated to market value