initiator

1. A material whose presence in the body eventually leads to cancer.

2. A substance that initiates a chain reaction or polymerization.

3. A task (in a mainframe computer) that initiates multiple jobs.

4. One who initiates.

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Top Words by points	Points	Word Game
initiator	9	Scrabble

2 Letters	Scrabble® Points
ai	2
an	2
ar	2
at	2
in	2
it	2
na	2
no	2
oi	2
on	2
or	2
ta	2
ti	2
to	2

3 Letters	Scrabble® Points
ain	3
air	3
ait	3
ani	3
ant	3
art	3
att	3
ion	3
nit	3
nor	3
not	3
oar	3
oat	3
ora	3
ort	3
rai	3
ran	3
rat	3
ria	3
rin	3
rot	3
tan	3
tao	3
tar	3
tat	3
tin	3
tit	3
ton	3
tor	3
tot	3
aro	3

4 Letters	Scrabble® Points
airn	4
airt	4
anti	4
inia	4
inro	4
inti	4
into	4
iota	4
iron	4
naoi	4
noir	4
nori	4
nota	4
rain	4
rani	4
rant	4
rato	4
riot	4
roan	4
rota	4
roti	4
tain	4
tarn	4
taro	4
tart	4
tian	4
tint	4
tiro	4
titi	4
toit	4
tora	4
tori	4
torn	4
tort	4
trio	4
trot	4

5 Letters	Scrabble® Points
intro	5
nitro	5
noria	5
ottar	5
ratio	5
riant	5
taint	5
tanto	5
tarot	5
titan	5
torii	5
torta	5
train	5
trait	5
trona	5
natto	5

6 Letters	Scrabble® Points
aroint	6
attorn	6
intort	6
ration	6
ratton	6
rotini	6
titian	6
triton	6

7 Letters	Scrabble® Points
introit	7

8 Letters	Scrabble® Points
antiriot	8

9 Letters	Scrabble® Points
initiator	9