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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 car·di·oid /ˈkɑrdiˌɔɪd/
 心形曲線; 心臟線; 心狀的

From: Webster's Revised Unabridged Dictionary (1913)

 Car·di·oid n.  Math. An algebraic curve, so called from its resemblance to a heart.
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From: WordNet (r) 2.0

 cardioid
      n : an epicycloid in which the rolling circle equals the fixed
          circle