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pigment
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headspring
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savage
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louis sullivan
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order aplacophora
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pigeon-breasted
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self-reproach
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wiggle
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propulsion
propulsion /prəˈpʌlʃən/
noun
-
The act of propelling
(
actuation
, propulsion
)
the act of propelling
-
A propelling force
(
propulsion
)
a propelling force