commutator

1. A cylindrical arrangement of insulated metal bars connected to the coils of a direct-current electric motor or generator, providing a unidirectional current from the generator or a reversal of current into the coils of the motor.

2. Mathematics In a commutative or noncommutative group, an element of the form ghg-1h-1 where g and h are elements of the group. If g and h commute, the commutator is the identity element.

3. A series of bars or segments so connected to armature coils of a generator or motor that rotation of the armature will in conjunction with fixed brushes result in unidirectional current output in the case of a generator and in the reversal of the current into the coils in the case of a motor.

4. An element of a mathematical group that when used to multiply the product of two given elements either on the right side or on the left side but not necessarily on both sides yields the product of the two given elements in reverse order.

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Top Words by points	Points	Word Game
commutator	16	Scrabble

2 Letters	Scrabble® Points
am	4
ar	2
at	2
ma	4
mm	6
mo	4
mu	4
om	4
or	2
ta	2
to	2
um	4
ut	2

3 Letters	Scrabble® Points
act	5
amu	5
arc	5
arm	5
art	3
att	3
cam	7
car	5
cat	5
coo	5
cor	5
cot	5
cru	5
cum	7
cur	5
cut	5
mac	7
mam	7
mar	5
mat	5
moa	5
moc	7
mom	7
moo	5
mor	5
mot	5
mum	7
mut	5
oar	3
oat	3
oca	5
oma	5
oot	3
ora	3
orc	5
ort	3
our	3
out	3
ram	5
rat	3
roc	5
rom	5
roo	3
rot	3
rum	5
rut	3
tam	5
tao	3
tar	3
tat	3
tau	3
tom	5
too	3
tor	3
tot	3
tum	5
tut	3
umm	7
uta	3
aro	3

4 Letters	Scrabble® Points
acro	6
ammo	8
arco	6
arum	6
atom	6
auto	4
camo	8
cart	6
coat	6
coma	8
comm	10
coot	6
corm	8
cram	8
curt	6
marc	8
mart	6
matt	6
maut	6
moat	6
moor	6
moot	6
mora	6
mort	6
mott	6
mura	6
mutt	6
orca	6
otto	4
rato	4
roam	6
room	6
root	4
rota	4
roto	4
rout	4
taco	6
tact	6
taro	4
tart	4
taut	4
toco	6
toom	6
toot	4
tora	4
torc	6
toro	4
tort	4
tour	4
tout	4
tram	6
trot	4
trou	4
umma	8

5 Letters	Scrabble® Points
actor	7
amort	7
amour	7
carom	9
comma	11
commo	11
cotta	7
court	7
macro	9
motor	7
motto	7
mucor	9
mucro	9
ottar	5
outro	5
taroc	7
tarot	5
torot	5
torta	5
tract	7
trout	5
tumor	7
tutor	5

6 Letters	Scrabble® Points
cottar	8
cuatro	8
marmot	10
motmot	10
outact	8
tomato	8
tomcat	10
turaco	8

7 Letters	Scrabble® Points
mutator	9
touraco	9

10 Letters	Scrabble® Points
commutator	16