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hydraulic

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hydraulic

 

  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Hydraulic  \Hy*drau"lic\,  a.  [F.  hydraulique  L.  hydraulicus,  fr 
  Gr  ?,  ?,  a  water  organ;  "y`dwr  water  +  ?  flute,  pipe.  See 
  {Hydra}.] 
  Of  or  pertaining  to  hydraulics,  or  to  fluids  in  motion; 
  conveying,  or  acting  by  water;  as  an  hydraulic  clock, 
  crane,  or  dock. 
 
  {Hydraulic  accumulator},  an  accumulator  for  hydraulic 
  machinery  of  any  kind  See  {Accumulator},  2. 
 
  {Hydraulic  brake},  a  cataract.  See  {Cataract},  3. 
 
  {Hydraulic  cement},  a  cement  or  mortar  made  of  hydraulic 
  lime,  which  will  harden  under  water. 
 
  {Hydraulic  elevator},  a  lift  operated  by  the  weight  or 
  pressure  of  water. 
 
  {Hydraulic  jack}.  See  under  {Jack}. 
 
  {Hydraulic  lime},  quicklime  obtained  from  hydraulic 
  limestone,  and  used  for  cementing  under  water,  etc 
 
  {Hydraulic  limestone},  a  limestone  which  contains  some  clay, 
  and  which  yields  a  quicklime  that  will  set  or  form  a 
  firm,  strong  mass,  under  water. 
 
  {Hydraulic  main}  (Gas  Works),  a  horizontal  pipe  containing 
  water  at  the  bottom  into  which  the  ends  of  the  pipes  from 
  the  retorts  dip,  for  passing  the  gas  through  water  in 
  order  to  remove  ammonia. 
 
  {Hydraulic  mining},  a  system  of  mining  in  which  the  force  of 
  a  jet  of  water  is  used  to  wash  down  a  bank  of  gold-bearing 
  gravel  or  earth.  [Pacific  Coast] 
 
  {Hydraulic  press},  a  hydrostatic  press.  See  under 
  {Hydrostatic}. 
 
  {Hydraulic  propeller},  a  device  for  propelling  ships  by  means 
  of  a  stream  of  water  ejected  under  water  rearward  from  the 
  ship. 
 
  {Hydraulic  ram},  a  machine  for  raising  water  by  means  of  the 
  energy  of  the  moving  water  of  which  a  portion  is  to  be 
  raised.  When  the  rush  of  water  through  the  main  pipe  d 
  shuts  the  valve  at  a,  the  momentum  of  the  current  thus 
  suddenly  checked  forces  part  of  it  into  the  air  chamber  b, 
  and  up  the  pipe  c,  its  return  being  prevented  by  a  valve 
  at  the  entrance  to  the  air  chamber,  while  the  dropping  of 
  the  valve  a  by  its  own  weight  allows  another  rush  through 
  the  main  pipe,  and  so  on  alternately. 
 
  {Hydraulic  valve}.  (Mach.) 
  a  A  valve  for  regulating  the  distribution  of  water  in  the 
  cylinders  of  hydraulic  elevators,  cranes,  etc 
  b  (Gas  Works)  An  inverted  cup  with  a  partition  dipping  into 
  water,  for  opening  or  closing  communication  between  two 
  gas  mains,  the  open  ends  of  which  protrude  about  the 
  water. 
 
  From  WordNet  r  1.6  [wn]: 
 
  hydraulic 
  adj  1:  moved  or  operated  of  effected  by  water;  "hydraulic  erosion" 
  2:  of  or  relating  to  the  study  of  hydraulics;  "hydraulic 
  engineer"




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