from The American Heritage® Dictionary of the English Language, 4th Edition
- n. One who conducts, especially:
- n. One who is in charge of a railroad train, bus, or streetcar.
- n. Music One who directs an orchestra or other such group.
- n. Physics A substance or medium that conducts heat, light, sound, or especially an electric charge.
- n. A lightning rod, as on a house or barn.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. One who conducts or leads; a guide; a director.
- n. A person who conducts an orchestra, choir or other music ensemble; a professional whose occupation is conducting.
- n. A person who takes tickets on public transportation.
- n. Something that can transmit electricity, heat, light or sound.
- n. An ideal of a ring that measures how far it is from being integrally closed
- n. A grooved sound or staff used for directing instruments, such as lithontriptic forceps; a director.
- n. A leader.
from the GNU version of the Collaborative International Dictionary of English
- n. One who, or that which, conducts; a leader; a commander; a guide; a manager; a director.
- n. One in charge of a public conveyance, as of a railroad train or a street car.
- n. The leader or director of an orchestra or chorus.
- n. A substance or body capable of being a medium for the transmission of certain forces, esp. heat or electricity; specifically, a lightning rod.
- n. A grooved sound or staff used for directing instruments, as lithontriptic forceps, etc.; a director.
- n. Same as Leader.
from The Century Dictionary and Cyclopedia
- n. One who conducts or escorts; one who goes before or accompanies and shows the way; a leader; a guide.
- n. Specifically A chief; a commander; one who leads an army.
- n. A director or manager in general; a regulator.
- n. The director of a chorus or an orchestra; one who indicates to the performers the rhythm and the expression of a piece of concerted music by means of motions of the hands or of a baton.
- n. The chief official on a railroad-train, who directs, and is responsible for the execution of orders concerning, the movements of the train, and usually collects tickets or fares; hence, one who performs similar duties on a street-car, etc. The duties of the guard on European railways are similar, but less comprehensive.
- n. That which conducts or transmits in any manner; specifically, in physics, a body that conducts or transmits through its substance energy in any of its forms: as, metals are conductors of electricity and of heat; water is a good conductor of sound. See conductivity.
- n. Hence A lightning-rod.
- n. In surgery, an instrument formerly used in the high operation for stone in the bladder.
- Specifically, in electricity, a substance through which electric currents can flow.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a substance that readily conducts e.g. electricity and heat
- n. the person who leads a musical group
- n. a device designed to transmit electricity, heat, etc.
- n. the person who collects fares on a public conveyance
From Latin conductor. (Wiktionary)