extinction

1. Physiology A gradual decrease in the excitability of a nerve to a previously adequate stimulus, usually resulting in total loss of excitability.

2. Psychology A reduction or a loss in the strength or rate of a conditioned response when the unconditioned stimulus or reinforcement is withheld.

3. The act of extinguishing.

4. The condition of being extinguished.

5. The fact of being extinct or the process of becoming extinct: "The most effective agent in the extinction of species is the pressure of other species” ( Alfred R. Wallace).

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Top Words by points	Points	Word Game
extinction	19	Scrabble

2 Letters	Scrabble® Points
en	2
et	2
ex	9
in	2
it	2
ne	2
no	2
oe	2
oi	2
on	2
ox	9
te	2
ti	2
to	2
xi	9

3 Letters	Scrabble® Points
con	5
cot	5
cox	12
eco	5
eon	3
ice	5
inn	3
ion	3
net	3
nit	3
nix	10
not	3
one	3
tec	5
ten	3
tet	3
tic	5
tie	3
tin	3
tit	3
tix	10
toe	3
ton	3
tot	3

4 Letters	Scrabble® Points
cent	6
cine	6
cion	6
cite	6
coin	6
cone	6
coni	6
conn	6
cote	6
etic	6
exit	11
exon	11
icon	6
inti	4
into	4
neon	4
nett	4
next	11
nice	6
nine	4
nite	4
nixe	11
none	4
noni	4
note	4
once	6
otic	6
oxen	11
oxic	13
tein	4
tent	4
text	11
tine	4
tint	4
titi	4
toit	4
tone	4
tote	4

5 Letters	Scrabble® Points
cento	7
conin	7
conte	7
inion	5
ionic	7
niton	5
nixie	12
nonce	7
nonet	5
octet	7
oncet	7
ontic	7
tenno	5
tenon	5
tinct	7
tonic	7
tonne	5
toxic	14
toxin	12
xenic	14
xenon	12
innie	5

6 Letters	Scrabble® Points
conine	8
exonic	15
exotic	15
incent	8
incite	8
intent	6
intine	6
intone	6
nocent	8
noetic	8
notice	8
otitic	8
toxine	13
neonic	8

7 Letters	Scrabble® Points
coniine	9
content	9
context	16
exciton	16
extinct	16
nicotin	9
tonetic	9
tontine	7

8 Letters	Scrabble® Points
cotinine	10
nicotine	10

10 Letters	Scrabble® Points
extinction	19