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Frictionless。 Being without a grinding or retarding aotion。
Fulcrumed。 A resting place for a lever。
Function。 The duty or sphere of action in a person； or object。
Glider。 An aeroplane； without power； adapted to be operated
by an aviator。
Governing。 An element which is designed to control a machine in a
regular manner。
Graduated。 A marked portion； which is regularly laid off to
indicate measurements or quantities。
Gravity。 The attraction of mass for mass。 The tendency of bodies
to move toward the earth。
Gravitatior The force with which all bodies attract each other。
Gyratory。 Having a circular and wheeling as well as a rotary
motion。
Gyroscope。 A wheel； designed to illustrate the laws of motion；
which freely revolves in gimbals within a ring； and when set into
motion； objects to change its plane of rotation。
Hemispherical。 The half of a sphere。 The half of an apple would
be hemispherical。
Hazardous。 That which is doubtful； accompanied by danger。
Helicopter。 A type of flying machine which has a large propeller；
or more than one； revolubly fixed on vertical shafts； by means of
which the machine is launched and projected through the air。
Horizontal。 Level； like water。
Hydroplane。 A term used to designate an aeroplane which is
provided with pontoons； whereby it may alight on the water； and
be launched from the surface。 The term hydroaeroplane is most
generally used to indicate this type of machine。
Impact。 The striking against； the striking force of one body
against another。
Immersed。 Placed under water below the surface。
Impinge。 To strike against； usually applied where air strikes
a plane or a surface at an angle。
Imitation。 Similarity； the same in appearance。
Incompatible。 Without harmony； incapable of existing together。
Incurved。 Applied to a surface formation where there is a
depression； or hollow。
Inequalities。 Not smooth； or regular； uneven。
Infinitely； Boundless； in great number； or quality； without
measure。
Initial。 The first； that which is at the beginning。
Indestructibility。 Not capable of being injured or destroyed。
Influenced。 Swayed； to be induced to change。
Inherent。 That which is in or belongs to itself。
Initiating。 To teach； to instill； to give an insight。
Indicator。 A term applied to mechanism which shows the results of
certain operations and enables the user to read the measure；
quantity； or quality shown。
Inconceivable。 Not capable of understanding； that which cannot be
understood by the human mind。
Institute。 To start； to bring into operation。
Insignias。 Things which are significant of any particular calling
or profession。
Instinct。 That quality in man or animals which prompts the doing
of things independently of any direct knowledge or understanding。
Intermediate。 Between； that which may be within or inside the
scope of the mind； or of certain areas。
Intervening。 The time between； also applied to the action of a
person who may take part in an affair between two or more
persons。
Interval。 A time between。
Investigator。 One who undertakes to find out certain things。
Incidence。 In physics this is a term to indicate the line which
falls upon or strikes another at an angle。
Inverted。 Upside down。
Invest。 To give to another thing something that it lacked before。
Kinetic。 Consisting in or depending upon motion。
Laminated。 Made up of a plurality of parts。 When wooden strips；
of different or of the same kinds are glued and then laid
together and put under heavy pressure
until thoroughly dried； the mass makes a far more rigid structure
than if cut out of a single piece。
Launchiug。 The term applied to the raising； or starting of a
boat； or of a flying object。
Lateral。 In mining this is a term to indicate the drifts or
tunnels which branch out from the main tunnel。 Generally it has
reference to a transverse position or direction；that is； at
right angles to a fore and aft direction。
Lift。 The vertical motion； or direction in an airship； thus the
lift may be the load； or the term used to designate
what the ship is capable of raising up。
Ligament。 The exceedingly strong tendons or muscles of birds and
animals； usually of firm； compact tissues。
Limitations。 Within certain bounds； in a prescribed scope。
Longitudinally。 Usually that direction across the longest part。
Majestically。 Grand； exalted dignity； the quality which inspires
reverence or fear。
Manipulate。 To handle； to conduct so that it will result in a
certain way。
Maneuver。 A methodical movement or change in troops。
Manually。 To perform by hand。
Manifestations。 The act of making plain to the eye or to the
understanding。
Manually…operated。 With the hands； a term applied to such
machines as have the control planes operated by hand。
Maintained。 Kept up； to provide for； to sustain。
Material。 The substance； or the matter from which an article is
made； also the important thing； or element。
Mass。 In physics it is that which in an article is always the
same。 It differs from weight in the particular that the mass of
an article is the same； however far it may be from the center of
the earth； whereas weight changes； and becomes less and less as
it recedes from the center of the earth。
Margin。 The edge； the principal differecee between this word and
edge； is； that margin has reference also to a border； or narrow
strip along the edge； as； for instance； the blank spaces at the
edges of a printed page。
Medievral。 Belonging to the Middle Ages。
Mercury。 A silver…white liquid metal； usually called quicksilver；
and rather heavy。 It dissolves most metals； and this process is
called amalgamation。
Militate。 In determining a question； to have weight； or to
influence a decision。
Mobility。 Being freely movable； capable of quick change。
Modifieation。 A change； making a difference。
Monitor。 Advising or reproving。 Advising or approving by way of
caution。
Monstrosities。 Anything which is huge； or distorted； or wrong in
structure。
Monorail。 A railway with a single track； designed to be used by a
bicycle form of carriage； with two wheels； fore and aft of each
other； and depending for its stability upon gyroscopes； mounted
on the carriage。
Momentum。 That which makes a moving body difficult to stop。 It is
the weight of a moving body； multiplied by its speed。
Monoplane。 The literal meaning is one plane。 As monoplane
machines are all provided with a fore and aft body； and each has
a wing or plane projecting out from each side of this body； it is
obvious that it has two planes instead of one。 The term； however；
has reference to the fact that it has only one supporting surface
on the same plane。 Biplanes have two supporting surfaces； one
above the other。