*ductor*

n. [ L., fr. adducere. ] (Anat.) A muscle which draws a limb or part of the body toward the middle line of the body, or closes extended parts of the body; -- opposed to abductor; as, the adductor of the eye, which turns the eye toward the nose. [ 1913 Webster ]

In the bivalve shells, the muscles which close the values of the shell are called adductor muscles. Verrill. [ 1913 Webster ]

n. [ LL., a carrier, transporter, L., a lessee. ] 1. One who, or that which, conducts; a leader; a commander; a guide; a manager; a director. [ 1913 Webster ]

Zeal, the blind conductor of the will. Dryden. [ 1913 Webster ]

2. One in charge of a public conveyance, as of a railroad train or a street car. [ U. S. ] [ 1913 Webster ]

3. (Mus.) The leader or director of an orchestra or chorus. [ 1913 Webster ]

4. (Physics) A substance or body capable of being a medium for the transmission of certain forces, esp. heat or electricity; specifically, a lightning rod. [ 1913 Webster ]

5. (Surg.) A grooved sound or staff used for directing instruments, as lithontriptic forceps, etc.; a director. [ 1913 Webster ]

6. (Arch.) Same as Leader. [ 1913 Webster ]

Prime conductor (Elec.), the largest conductor of an electrical machine, serving to collect, accumulate, or retain the electricity. [ 1913 Webster ]

a. [ LL. conductorius. ] Having the property of conducting. [ R. ] [ 1913 Webster ]

‖n. [ L., a guide. See Deduce. ] (Zool.) The pilot whale or blackfish. [ 1913 Webster ]

n. [ L., fr. ducere to lead. ] 1. One who leads. [ Obs. ] Sir T. Browne. [ 1913 Webster ]

2. (Mach.) A contrivance for removing superfluous ink or coloring matter from a roller. See Doctor, 4. Knight. [ 1913 Webster ]

Ductor roller (Printing), the roller which conveys or supplies ink to another roller. Knight. [ 1913 Webster ]

n. [ L., tutor. ] One who, or that which, brings forth, elicits, or extracts. [ 1913 Webster ]

Stimulus must be called an eductor of vital ether. E. Darwin. [ 1913 Webster ]

n. [ L., one who stirs up or rouses. See Induce. ] [ 1913 Webster ]

1. The person who inducts another into an office or benefice. [ 1913 Webster ]

2. (Elec.) That portion of an electrical apparatus, in which is the inducing charge or current. [ 1913 Webster ]

n.; pl. E. Inductoriums L. Inductoria [ NL., fr. E. induction. ] (Elec.) An induction coil.

n. [ L. ] An introducer. [ Obs. ] [ 1913 Webster ]

adv. By way of introduction. [ 1913 Webster ]

a. [ L. itroductorius: cf. F. introductoire. ] Serving to introduce something else; leading to the main subject or business; preliminary; prefatory; as, introductory proceedings; an introductory discourse. [ 1913 Webster ]

n. [ L. manus the hand + ductor a leader, ducere to lead: cf. F. manuducteur. ] (Mus.) A conductor; an officer in the ancient church who gave the signal for the choir to sing, and who beat time with the hand, and regulated the music. Moore (Encyc. of Music.) [ 1913 Webster ]

n. (Physics) A substance which does not conduct, that is, convey or transmit, heat, electricity, sound, vibration, or the like, or which transmits them with difficulty; an insulator; as, wool is a nonconductor of heat; glass and dry wood are nonconductors of electricity. [ 1913 Webster ]

n. (Elec.) A substance or device that has its conductivity altered in some way by electric waves, as a coherer. [ Webster 1913 Suppl. ]