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draws a body to the center。
Characteristic。 Striking； that which is peculiar to some thing or
object。
Commensurate。 Sufficient； in proper proportion； sufficient for
the occasion。
Commercially。 Pertaining to the nature of trade； the making of
money。
Complicated。 Not easily explainable； not easy to separate。
Comparatively。 Judged by something else； taken with reference to
another object or thing。
Compression。 The drawing together； forcing into a smaller
compass； or space。
Composition。 Made up of different elements； or things。
Conceivable。 Made up from the imagination。
Concaved。 Hollowed： In aviation it has reference to the underside
of the plane； which is usually provided； structurally； with a
hollow or trough formation。
Conforming。 To make alike in form； to bring into harmony。
Conjunction。 In eonneetion with； joining together。
Convex。 A rounded surface； a bulging out。
Conclusion。 The end； a finding in law； a reasoning from a certain
condition。
Conductivity。 The property of materials whereby they will
transmit heat along from one part to another； also electricity。
Concentrated。 Brought together； assembled in a smaller space。
Conclusive。 A positive ending； decisive of the matter at issue。
Concentrically。 A line which is at all points at the same
distance from one point。
Condensation。 The act or process of making denser； or being
brought together。
Contemplate。 To consider； to judge。
Convoys。 A protecting force which aeeompanies the transfer of
property。
Convection。 The diffusion of heat through a liquid or gas。
Consistent。 A state of harmony； the same at &11 times。
Constant。 In mathematics； a figure which never changes； or a
figure used as a fixed valuation in a problem。
Controllable。 Held within bounds； that which can be within the
power to accomplish。
Correctional。 The means whereby a fault may be made right。
Consequence。 The result； that which flows from a preceding
action。
Counterforce。 An action contrary or opposite to the main force。
Counter…balance。 Any power equally opposing another。
Counteract。 A force acting in opposition to another。
Countercurrent。 An air current which sets up in an opposite
direction in the path of a moving aeroplane。
Cushioned。 An action which takes place against a moving
aeroplane； by a sudden gust of air or countercurrent。
Dedicated。 To set apart for some special purpose。
Degree。 An interval； a grade； a stage； a certain proportion。
Deltoid。 Shaped like the Greek letter delta。
Density。 Closeness of parts。
Demonstration。 Making clear； showing up； an exhibition or
expression。
Deceptive。 The power or tendency to give a false impression。
Deterrent。 To hold back； to prevent action。
Detracting。 The tendency to take away； to belittle。
Depressed。 To move downwardly。
Destination。 The place set for the end of the journey。
Despoiling。 To take away from； robbing or taking from another
by force or by stealth。
Dependant。 Hanging below； projecting from the lower side。
Dexterity。 Agility； smartness in action。
Deranged。 Put out of order； wrongly arranged。
Develop。 Brought out； to put into a correct shape or form。
Deferred。 Put over to another time。
Designedly。 With a direct purpose。
Diagonal。 Across an object at an angle to one or more aides。
Diametrically。 Across an object through or near the center
thereof。
Diagram。 A mechanical plan or outline of an object。
Dimension。 The distance across an object。 The measurement； for
instance； of a propeller from tip to tip。
Dynamically。 Pertaining to motion as a result of force。
Dispossessed。 A term used to indicate the act which removes a
person from the possession of property。
Diameter。 The measurement across an object。
Divest。 Taken away from； removed out of。
Disregard。 Deliberate lack of attention。
Diversity。 The state wherein one is unlike another；
dissimilarity。
Drift。 The term used to indicate the horizontal motion； or the
pull of an aeroplane。
Dragon。 A fabulous monster； usually in the form of a serpent。
Duplicate。 Two； made in exact imitation of an original。
Easement。 A legal phrase to designate that right which man
possesses； irrespective of any law； to gain access to his
property。
Effrontery。 Boldness with insolence； rashness without propriety。
Effective。 To be efficient。
Element。 One part of a whole。
Elasticity。 Material which will go back to its original form
after being distorted； is said to be elastic。
Eliminate。 To take away from； to remove a part； or the whole。
Elliptical。 Oblong with rounded ends。
Elusive。 Capable of escaping from； hard to hold。
Elevator。 The horizontal planes in front or rear； or in both
front and rear of the supporting surfaces of an aeroplane。
Emergency。 A sudden occurrence calling for immediate action。
Emplacement。 A spot designed to hold heavy field pieces in
intrenchments。
Enactment。 The formulation of a law； the doing of a special
thing。
Enunciated。 Announced； setting forth of an act or a condition。
Energy。 That quality by reason of which anything tends to move or
act。
Equidistant。 Two points or objects at equal distance from a
common point。
Equilibrinm。 A balance produced by the action of two or more
forces。
Equalizing； One made equal to the other； one side the same as the
other。
Equipped。 Armed； provided with the proper material； or in the
same condition。
Essential。 The important part or element。
Essence The real charaeter or element of the thing itself。
External。 The outermost portion。
Evolution。 A gradual change or building up； from a lower to a
higher order。
Evolved。 Brought out from a crude condition to a better form。
Expression。 The art of explaining or setting forth。
Expansion。 Growing larger； to occupy a greater space。
Exerted。 To work to the utmost； to put forth in action。
Exhilaratiorn。 A lively； pleasing or happy sensation。
Exploited。 To fully examine and consider； as well as carry out。
Extremity。 The end； as far as ean be considered。
Facility。 Ease of management； to do things without difficulty。
Factor。 One of the elements in a problem； or in mechanical
action。
Fascination； Attraetiveness that is pleasing。
Flexure。 The capacity to bend and yield； and return to its
original position。
Flexible； That which will yield； springy。
Fore and Aft。 Lengthwise； as from stem to stern of a ship。
Formation。 The shape or arrangement of an article or thing。
Formulated。 Put into some eonerete form； or so arranged that it
may be understood。
Frictionless。 Being without a grinding or retarding aotion。
Fulcrumed。 A resting place for a lever。