germ tube
— Noun
– English
～ (botany) a slender tubular outgrowth from a spore in germination
glow tube
— Noun
– English
～ a gas-discharge tube consisting of a cold cathode and a diode in a tube filled with gas; the color of the glow depends on the particular gas
Geiger tube
— Noun
– English
～ an ionization chamber contained in a tube in a Geiger counter
Geiger-Muller tube
— Noun
– English
～ an ionization chamber contained in a tube in a Geiger counter
gas-discharge tube
— Noun
– English
～ a tube in which an electric discharge takes place through a gas
genus Tuber
— Noun
– English
～ type genus of the Tuberaceae: fungi whose fruiting bodies are typically truffles
genus Tubercularia
— Noun
– English
～ type genus of the Tuberculariaceae; fungi with nodules of red or pink conidia; some cause diebacks of woody plants