Conception to Connecting-rod bearing.

Conception. A plan or invention of the mind.
Concise. Brief but comprehensive.
Concrete. Cement, sand, and gravel, with proportions varying to suit conditions.
Concrete blocks. (Bldg.) Molded blocks, usually with hollow spaces, used in construction of walls.
Concurrent forces. (Meeh.) Forces which either start from a common point or pass through a common point if extended.
Condensation. (Phys.) The change of a substance from a vapour into a liquid state due to cooling.
Condensation pump. (Steam Heat.) A device for removing the liquid condensation from steam returns.
Condensation resins. (Plast. ) Any of the alkyd, phenol-aldehyde, and urea-formaldehyde resins. The fi­nal products are also called "con­densation-polymers. "
Condensed. (Print.) Cut down, ab­breviated. Condensed type is that which is thin in proportion to its height.
Condenser. (Elee.) An accumulator of electrical energy. (Meeh.) A ves­sel in which the condensation of gases is effected.
Condenser antenna. (Radio) A small condenser connected in the antenna circuit used to increase the wave length of a short antenna.
Condensser capacity. (Elee.) SEE Capacity.
Condenser dielectric. (Elee.) The material used for insulation between condenser plates.
Condenser electrolyte. (Elee.) The so­lution used in a liquid-type con­denser.
Condenser microphone. A micro­phone utilising the changes in 'Ca­
pacitance caused in a condenser if one of its plates-the microphone membrane-vibrates in "rhythm with sund waves. Same principle can be applied to a condenser type phono cartridge. See "Microphone, Con­denser".
Condenser plate. (Elee.) See Platecondenser.
Conductance. (Elec.) The opposite of resistance; i.e., the ease with which a conductor carries an electric cur­rent.
Conduction. (Elee.) The flow of an electric current through a conduct­ing body, such as a copper wire.
Conductivity. (Elee.) The relative ability of materjals of carry an electrical current.
Conductor. (Elee.) A substance which conducts electricity readily.

Conductor stake. (Sheet-met. Wk.) A stake having two long cylindrical ends of different diameters. It is used for bending, shaping, and working
round objects such as rain conduc- . tors, spouts, and sheet-metal tubes.
Conduit. A conductor, as a large pipe for fluids. (Elec.) A metal enClosure used to protect electric wiring. The

Conduit box. (Elec.) The steel box to which the ends of a conduit are attached and which may be used as an outlet, junction, or pull box.
Conduit bushing. (Elec.) A threaded cap attached to the end of a line of conduit to make a finished job and to prevent chafing of conductors which pass through it.
Conduit coupling. (Elec.) A short metal sleeve with internal threads to receive the threaded ends of pieces of conduit to be connected.
Conduit wiring. (Elec.) When elec­tric wires are carried inside con­duit.
Condulet. (Elec.) A trade name for conduit fittings.
Cone. A solid figure that tapers uni­formly from a circular base to a point. (Mach.) A piece like the cirular segment of a cone. (Math.)
Convex area = circumference of base x 1/2 slanting height. Entire area = convex area + area of base. Volume = area of base x 113 ofthe altitude. (Ceram.) The stack of a kiln.
Cone clutch. (Mech.) A form offric­tion clutch in which the power nec­essary for driving is effected by the friction of smooth, turned conical surfaces, often with leather.
Conelrad. (Rad.) A radio alert sys­tem for air defense; est. by u.s. government in 1951. (Plan for Control of Electromagnetic Radia­tion.)
Cone mandrel. (Mach.) A type of manarel on which work is centered by the clamping action of two cones against the work. The mandrel has a shoulder to prevent one cone from sliding and threads to permit a lock­ing of the second cone.
Cone pulley. (Mech.) A stepped pul­ley, one having two or more faces of .
different diameters: used in pairs, the large end of one being opposite the small end of the other so that a shifting of the belt will give a change of speed.
Cone pulley lathe. (Mach.) A special lathe used for turning cone pulleys.
Cone speaker. (Elec.) One in which the movable coil is permanently attached to the apex of a stiff paper cone.
Confidante. (Furn.) A sofa or settee with sepa.rated seats at each end.
Conic section. (Math.) A curve which may be formed by the intersection of a plane with a right circular cone; an ellipse, parabola, or hyperbola;from that branch of geometry which treats of these curves.
Coniferous. Pertaining to plants of trees bearing cones.
Coning angle. (A era. ) The average an­gle.between the span axis of a blade or wing of a rotary wing system and a rotary wing system and a plane perpendicular to the axis of rotation.
Conjugate axis. The shortest diameter of an oval or ellipse.
Cc.nnecting rod. (Auto.) A rod or arm, with bearings at both ends, which makes the connection between crankshaft and pistons.
Connecting-rod bearing. (A uta.) The bearing at the large end of the con­