cardioid

1. A heart-shaped plane curve, the locus of a fixed point on a circle that rolls on the circumference of another circle with the same radius.

2. A heart-shaped curve that is traced by a point on the circumference of a circle rolling completely around an equal fixed circle and has an equation in one of the forms ρ = (1 ± θ) or ρ = (1 ± θ) in polar coordinates.

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Top Words by points	Points	Word Game
cardioid	12	Scrabble

2 Letters	Scrabble® Points
ai	2
od	3
id	3
oi	2
or	2
do	3
da	3
ad	3
ar	2

3 Letters	Scrabble® Points
rad	4
oca	5
oda	4
dor	4
doc	6
did	5
aid	4
dad	5
air	3
odd	5
ora	3
orc	5
arc	5
oar	3
ado	4
rai	3
ria	3
rid	4
roc	5
cor	5
cod	6
car	5
cad	6
rod	4
add	5
aro	3

4 Letters	Scrabble® Points
odic	7
roid	5
orad	5
orca	6
raid	5
road	5
cria	6
arid	5
caid	7
card	7
ciao	6
coda	7
cadi	7
coir	6
cord	7
dado	6
dido	6
arco	6
acro	6
irid	5
acid	7

5 Letters	Scrabble® Points
radii	6
oidia	6
acrid	8
aroid	6
radio	6
iodic	8
caird	8
coria	7
daric	8
droid	7
iodid	7

6 Letters	Scrabble® Points
cardio	9
diacid	10

8 Letters	Scrabble® Points
cardioid	12