As nouns the difference between heptode and heptone
is that heptode is a compound thermionic valve containing a triode and tetrode; was used in superheterodyne radio receivers while heptone is a liquid hydrocarbon, C7H10, of the valylene series.
heptode
English
Noun
(head)
a compound thermionic valve containing a triode and tetrode; was used in superheterodyne radio receivers
See also
* pentagrid converter
heptone
English
Noun
(organic compound) A liquid hydrocarbon, C7H10, of the valylene series.
(
Webster 1913)