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horizontal

## horizontal

```  2  definitions  found

From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]:

Horizontal  \Hor`i*zon"tal\,  a.  [Cf.  F.  horizontal.]
1.  Pertaining  to  or  near  the  horizon.  ``Horizontal  misty
air.''  --Milton.

2.  Parallel  to  the  horizon;  on  a  level;  as  a  horizontalline
or  surface.

3.  Measured  or  contained  in  a  plane  of  the  horizon;  as
horizontal  distance.

{Horizontal  drill},  a  drilling  machine  having  a  horizontal
drill  spindle.

{Horizontal  engine},  one  the  piston  of  which  works
horizontally.

{Horizontal  fire}  (Mil.),  the  fire  of  ordnance  and  small  arms
at  point-blank  range  or  at  low  angles  of  elevation.

{Horizontal  force}  (Physics),  the  horizontal  component  of  the
earth's  magnetic  force.

{Horizontal  line}  (Descriptive  Geometry  &  Drawing),  a
constructive  line  either  drawn  or  imagined,  which  passes
through  the  point  of  sight,  and  is  the  chief  line  in  the
projection  upon  which  all  verticals  are  fixed,  and  upon
which  all  vanishing  points  are  found

{Horizontal  parallax}.  See  under  {Parallax}.

{Horizontal  plane}  (Descriptive  Geometry),  a  plane  parallel
to  the  horizon,  upon  which  it  is  assumed  that  objects  are
projected.  See  {Projection}.  It  is  upon  the  horizontal
plane  that  the  ground  plan  of  the  buildings  is  supposed  to
be  drawn.

{Horizontal  projection},  a  projection  made  on  a  plane
parallel  to  the  horizon.

{Horizontal  range}  (Gunnery),  the  distance  in  a  horizontal
plane  to  which  a  gun  will  throw  a  projectile.

{Horizontal  water  wheel},  a  water  wheel  in  which  the  axis  is
vertical,  the  buckets  or  floats  revolving  in  a  horizontal
plane,  as  in  most  turbines.

From  WordNet  r  1.6  [wn]:

horizontal
adj  :  parallel  to  or  in  the  plane  of  the  horizon  or  a  base  line
"a  horizontal  surface"  [ant:  {vertical},  {inclined}]
n  :  something  that  is  oriented  horizontally
```