pentodeWiktionary 原文英/ˈpɛn.təʊd/美/ˈpɛnˌtoʊd/构词拆解pentpent-前缀ode-ode后缀pent-Alternative form of penta- used before a vowel. · (chemistry) Used for the digit five to form systematic element names of elements whose existence has been predicted, and which have not yet been given a trivial name.-odeWay, path, travel. · Way, means, method, system.词源说明From pent- + -ode.释义名词noun1A thermionic valve similar to a tetrode with the addition of a third grid, the suppressor grid to reduce the secondary emission effect; was/is used in high quality audio and radio products.同族词派生词 1photopentode