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1 definition found
 for Open-front furnace
From The Collaborative International Dictionary of English v.0.48 :

  Open \O"pen\, a. [AS. open; akin to D. open, OS. opan, G. offan,
     Icel. opinn, Sw. ["o]ppen, Dan. aaben, and perh. to E. up.
     Cf. Up, and Ope.]
     1. Free of access; not shut up; not closed; affording
        unobstructed ingress or egress; not impeding or preventing
        passage; not locked up or covered over; -- applied to
        passageways; as, an open door, window, road, etc.; also,
        to inclosed structures or objects; as, open houses, boxes,
        baskets, bottles, etc.; also, to means of communication or
        approach by water or land; as, an open harbor or
        roadstead.
        [1913 Webster]
  
              Through the gate,
              Wide open and unguarded, Satan passed. --Milton
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     Note: Also, figuratively, used of the ways of communication
           of the mind, as by the senses; ready to hear, see,
           etc.; as, to keep one's eyes and ears open.
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                 His ears are open unto their cry.  --Ps. xxxiv.
                                                    15.
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     2. Free to be used, enjoyed, visited, or the like; not
        private; public; unrestricted in use; as, an open library,
        museum, court, or other assembly; liable to the approach,
        trespass, or attack of any one; unprotected; exposed.
        [1913 Webster]
  
              If Demetrius . . . have a matter against any man,
              the law is open and there are deputies. --Acts xix.
                                                    33.
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              The service that I truly did his life,
              Hath left me open to all injuries.    --Shak.
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     3. Free or cleared of obstruction to progress or to view;
        accessible; as, an open tract; the open sea.
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     4. Not drawn together, closed, or contracted; extended;
        expanded; as, an open hand; open arms; an open flower; an
        open prospect.
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              Each, with open arms, embraced her chosen knight.
                                                    --Dryden.
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     5. Hence:
        (a) Without reserve or false pretense; sincere;
            characterized by sincerity; unfeigned; frank; also,
            generous; liberal; bounteous; -- applied to personal
            appearance, or character, and to the expression of
            thought and feeling, etc.
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                  With aspect open, shall erect his head. --Pope.
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                  The Moor is of a free and open nature. --Shak.
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                  The French are always open, familiar, and
                  talkative.                        --Addison.
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        (b) Not concealed or secret; not hidden or disguised;
            exposed to view or to knowledge; revealed; apparent;
            as, open schemes or plans; open shame or guilt; open
            source code.
            [1913 Webster +PJC]
  
                  His thefts are too open.          --Shak.
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                  That I may find him, and with secret gaze
                  Or open admiration him behold.    --Milton.
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     6. Not of a quality to prevent communication, as by closing
        water ways, blocking roads, etc.; hence, not frosty or
        inclement; mild; -- used of the weather or the climate;
        as, an open season; an open winter. --Bacon.
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     7. Not settled or adjusted; not decided or determined; not
        closed or withdrawn from consideration; as, an open
        account; an open question; to keep an offer or opportunity
        open.
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     8. Free; disengaged; unappropriated; as, to keep a day open
        for any purpose; to be open for an engagement.
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     9. (Phon.)
        (a) Uttered with a relatively wide opening of the
            articulating organs; -- said of vowels; as, the [aum]n
            f[aum]r is open as compared with the [=a] in s[=a]y.
        (b) Uttered, as a consonant, with the oral passage simply
            narrowed without closure, as in uttering s.
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     10. (Mus.)
         (a) Not closed or stopped with the finger; -- said of the
             string of an instrument, as of a violin, when it is
             allowed to vibrate throughout its whole length.
         (b) Produced by an open string; as, an open tone.
             [1913 Webster]
  
     The open air, the air out of doors.
  
     Open chain. (Chem.) See Closed chain, under Chain.
  
     Open circuit (Elec.), a conducting circuit which is
        incomplete, or interrupted at some point; -- opposed to an
        uninterrupted, or closed circuit.
  
     Open communion, communion in the Lord's supper not
        restricted to persons who have been baptized by immersion.
        Cf. Close communion, under Close, a.
  
     Open diapason (Mus.), a certain stop in an organ, in which
        the pipes or tubes are formed like the mouthpiece of a
        flageolet at the end where the wind enters, and are open
        at the other end.
  
     Open flank (Fort.), the part of the flank covered by the
        orillon.
  
     Open-front furnace (Metal.), a blast furnace having a
        forehearth.
  
     Open harmony (Mus.), harmony the tones of which are widely
        dispersed, or separated by wide intervals.
  
     Open hawse (Naut.), a hawse in which the cables are
        parallel or slightly divergent. Cf. Foul hawse, under
        Hawse.
  
     Open hearth (Metal.), the shallow hearth of a reverberatory
        furnace.
  
     Open-hearth furnace, a reverberatory furnace; esp., a kind
        of reverberatory furnace in which the fuel is gas, used in
        manufacturing steel.
  
     Open-hearth process (Steel Manuf.), a process by which
        melted cast iron is converted into steel by the addition
        of wrought iron, or iron ore and manganese, and by
        exposure to heat in an open-hearth furnace; -- also called
        the Siemens-Martin process, from the inventors.
  
     Open-hearth steel, steel made by an open-hearth process; --
        also called Siemens-Martin steel.
  
     Open newel. (Arch.) See Hollow newel, under Hollow.
  
     Open pipe (Mus.), a pipe open at the top. It has a pitch
        about an octave higher than a closed pipe of the same
        length.
  
     Open-timber roof (Arch.), a roof of which the
        constructional parts, together with the under side of the
        covering, or its lining, are treated ornamentally, and
        left to form the ceiling of an apartment below, as in a
        church, a public hall, and the like.
  
     Open vowel or Open consonant. See Open, a., 9.
        [1913 Webster]
  
     Note: Open is used in many compounds, most of which are
           self-explaining; as, open-breasted, open-minded.
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     Syn: Unclosed; uncovered; unprotected; exposed; plain;
          apparent; obvious; evident; public; unreserved; frank;
          sincere; undissembling; artless. See Candid, and
          Ingenuous.
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