As nouns the difference between cardioid and caridoid
is that
cardioid is (geometry) an epicycloid with exactly one cusp; the plane curve with polar equation
$\backslash rho\; =\; 1\; +\; \backslash cos\backslash ,\backslash theta$  having a shape supposedly heartshaped while
caridoid is any of various crustaceans related to shrimp.
As adjectives the difference between cardioid and caridoid
is that
cardioid is having this characteristic shape while
caridoid is of or relating to caridoids; being a caridoid.
Other Comparisons: What's the difference?
cardioid Noun
( en noun)
(geometry) An epicycloid with exactly one cusp; the plane curve with polar equation $\backslash rho\; =\; 1\; +\; \backslash cos\backslash ,\backslash theta$  having a shape supposedly heartshaped
Derived terms
* cardioid catacaustic
* cardioid condenser
* cardioid coordinate
* cardioid evolute
* cardioid inverse curve
* cardioid involute
* cardioid microphone
Anagrams
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caridoid English
Noun
( en noun)
Any of various crustaceans related to shrimp.
Adjective
()
Of or relating to caridoids; being a caridoid.
Derived terms
* caridoid escape reaction
Anagrams
* 