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1. potassium-argon dating
noun.
Geological
dating
that
relies
on
the
proportions
of
radioactive
potassium
in
a
rock
sample
and
its
decay
product,
argon.
Synonyms
geological dating
dating
2. potassium
noun.
(pəˈtæsiːəm)
A
light
soft
silver-white
metallic
element
of
the
alkali
metal
group;
oxidizes
rapidly
in
air
and
reacts
violently
with
water;
is
abundant
in
nature
in
combined
forms
occurring
in
sea
water
and
in
carnallite
and
kainite
and
sylvite.
Synonyms
saltwater
carnallite
metal
sylvine
seawater
kainite
langbeinite
brine
sylvite
metallic element
atomic number 19
K
Antonyms
fresh water
nonmetallic
3. dating
noun.
(ˈdeɪtɪŋ)
Use
of
chemical
analysis
to
estimate
the
age
of
geological
specimens.
Synonyms
rubidium-strontium dating
qualitative analysis
carbon-14 dating
carbon dating
geological dating
potassium-argon dating
radiocarbon dating
chemical analysis
4. argon
noun.
(ˈɑːrˌgɑːn)
A
colorless
and
odorless
inert
gas;
one
of
the
six
inert
gases;
comprises
approximately
1%
of
the
earth's
atmosphere.
Synonyms
atomic number 18
chemical element
Ar
argonon
air
inert gas
element
noble gas
Antonyms
wet
software
curve
Etymology
argon (English)
ἀργόν (Ancient Greek (to 1453))
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antonym
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skullduggery
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for-the-first-time
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out-of-the-box thinking
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critical-thinking
Shaft
bittersweet
Trekked
protective-tariff
seamless
tarmac
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pedometer
telemarket
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