heliograph
English Dictionary
->
Letter H
-> heliograph
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heliograph Definition
(n)
an
apparatus
for
sending
telegraphic
messages
by
using
a
mirror
to
turn
the
sun
''
s
rays
off
and
on
(v)
signal
by
means
of
a
mirror
and
the
using
the
sun
''
s
rays
heliograph Synonyms
heliograph
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