conductor

Meanings

1. 1
   noun

   One who conducts or leads; a guide; a director.

   […]Zeal, the blind conductor of the will;

2. 2
   noun

   A person who takes tickets on public transportation and also helps passengers.

   train conductor

3. 3
   noun

   Something that can transmit electricity, heat, light, or sound.

   Falling conductors may come in contact with grounded objects or puddles of water.

4. 4
   noun

   An ideal of a ring that measures how far it is from being integrally closed

   If c is the conductor ideal for R in R then prime ideals not containing c correspond to localizations yielding discrete valuation rings.

5. 5
   noun

   a device designed to transmit electricity, heat, etc.

6. 6
   noun

   the person who leads a musical group

7. 7
   noun

   the person who collects fares on a public conveyance

8. 8
   noun

   a substance that readily conducts e.g. electricity and heat

Etymology

Borrowed from Middle French conductour, from Old French conduitor, from Latin conductor.