Pentode
[pen-tohd] /ˈpɛn toʊd/
noun, Electronics.
1.
a vacuum tube having five electrodes, usually a plate, three grids, and a cathode, within the same envelope.
/ˈpɛntəʊd/
noun
1.
an electronic valve having five electrodes: a cathode, anode, and three grids
2.
(modifier) (of a transistor) having three terminals at the base or gate
pentode
(pěn’tōd’)
Any electron tube with the basic structure and functionality of a triode, but including two extra electrodes, a screen and a suppressor grid. The screen helps the tube respond well at high frequencies (as in a tetrode), while a negatively charged suppressor grid adjacent to the plate prevents secondary emission of electrons from the plate, increasing the efficiency of the tube. See more at suppressor.
Read Also:
- Pentolite
[pen-tl-ahyt] /ˈpɛn tlˌaɪt/ noun 1. a high explosive consisting of pentaerythritol tetranitrate and TNT.
- Pentomic
[pen-tom-ik] /pɛnˈtɒm ɪk/ adjective, Military. 1. pertaining to or characterizing the organization of an army division into five groups, each with supporting units, geared to maneuver in keeping with the requirements of atomic warfare. /pɛnˈtɒmɪk/ adjective 1. denoting or relating to the subdivision of an army division into five battle groups, esp for nuclear warfare
- Pentosan
[pen-tuh-san] /ˈpɛn təˌsæn/ noun, Biochemistry. 1. any of a class of polysaccharides that occur in plants, humus, etc., and form pentoses upon hydrolysis. /ˈpɛntəˌsæn/ noun 1. (biochem) any of a group of polysaccharides, having the general formula (C5H8O4)n: occur in plants, humus, etc
- Pentosans
[pen-tuh-san] /ˈpɛn təˌsæn/ noun, Biochemistry. 1. any of a class of polysaccharides that occur in plants, humus, etc., and form pentoses upon hydrolysis. /ˈpɛntəˌsæn/ noun 1. (biochem) any of a group of polysaccharides, having the general formula (C5H8O4)n: occur in plants, humus, etc
- Pentose-nucleic-acid
noun, Biochemistry. 1. a nucleic acid containing a pentose. 2. .