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Webster's 1913 Dictionary
SEMI-DIESEL
SEMI-DIESEL
Sem
`i-Die "
sel,
a.
Defn:
Designating
an
internal-combustion
engine
of
a
type
resembling
the
Diesel
engine
in
using
as
fuel
heavy
oil
which
is
injected
in
a
spray
just
before
the
end
of
the
compression
stroke
and
is
fired
without
electrical
ignition.
The
fuel
is
sprayed
into
an
iron
box
(
called
a
hot
bulb
or
hot
pot
)
opening
into
the
combustion
chamber,
and
heated
for
ignition
by
a blast-lamp
until
the
engine
is
running,
when
it
is,
ordinarily,
kept
red
hot
by
the
heat
of
combustion.
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The Wordsmith Dictionary