Dimension

Measurement; size.

Ductility

That property of metal which permits it to be drawn out, or worked.

Dividers

An instrument, like a compass, for stepping off measurements, or making circles.

Diverge

Spreading out from a common point.

Drift

A cutting tool for smoothing a hole in a piece of metal.

Duplex

Two; double.

Dynamite

An explosive composed of an absorbent, like earth, combined with nitro-glycerine.

Dynamometer

An instrument for measuring power developed.

Eccentric

Out of center.

Echoes

The reflection of sound.

Effervesce

The action due to the unity of two opposite chemicals.

Efficiency

The term applied to the quality of effectiveness.

Ellipse

A form which is oblong, or having a shape, more or less, like the longitudinal section of an egg.

Electrolytic

The action of a current of water passing through a liquid, and decomposing it, and carrying elements from one electrode to the other.

Elasticity

The quality in certain substances to be drawn out of their normal shape, and by virtue of which they will resume their original form when released.

Embedded

To be placed within a body or substance.

Emerge

To come out of.

Emphasize

To lay particular stress upon.

Emery

A hard substance, usually some of the finely divided precious stones, and used for polishing and grinding purposes.

Enormous

A large amount; great in size.

Enunciated

Proclaimed; given out.

Equalization

To put on an even basis; to make the same comparatively.

Eradicator

To take out; to cause to disappear.

Escapement

A piece of mechanism devised for the purpose of giving a uniform rate of speed to the movement of wheels.

Essential

The important feature; the principal thing.

Expansion

To enlarge; growing greater.

Equidistant

The same distance from a certain point.

Evolved

Brought out of; the result of certain considerations.

Facet

A face.

Facilitated

Made easy.

Flux

Any substance which will aid in uniting material under heat. The act of uniting.

Fluid

Any substance in which the particles freely interchange positions.

Flour emery

Emery which is finely ground.

Flexible

The quality of any material which will permit bending.

Float cut

The term when applied to a tool where the cut is an easy one.

Flexure

The springing yield in a substance.

Foot pound

A unit, usually determined by the number of pounds raised one foot in one second of time. 550 pounds raised one foot in one second of time, means so many foot pounds.