ˈte.ˌtrōd noun
( -s )
Etymology: tetra- + -ode
: a vacuum tube with four electrodes, a cathode, an anode, a control grid, and an additional grid or other electrode
ˈte.ˌtrōd noun
( -s )
Etymology: tetra- + -ode
: a vacuum tube with four electrodes, a cathode, an anode, a control grid, and an additional grid or other electrode
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012