leav·en /ˈlɛvən/
 酵素,酵母(vt.)使發酵,影響


 Leav·en, v. t. [imp. & p. p. Leavened p. pr. & vb. n. Leavening ]
 1. To make light by the action of leaven; to cause to ferment.
    A little leaven leaveneth the whole lump.   --1 Cor. v. 6.
 2. To imbue; to infect; to vitiate.
    With these and the like deceivable doctrines, he leavens also his prayer.   --Milton.

 ◄ ►


 Leav·en n.
 1. Any substance that produces, or is designed to produce, fermentation, as in dough or liquids; esp., a portion of fermenting dough, which, mixed with a larger quantity of dough, produces a general change in the mass, and renders it light; yeast; barm.
 2. Anything which makes a general assimilating (especially a corrupting) change in the mass.
    Beware of the leaven of the Pharisees, which is hypocrisy.   --Luke xii. 1.


 leaven
      n 1: a substance used to produce fermentation in dough or a
           liquid [syn: leavening]
      2: an influence that works subtly to lighten or modify
         something; "his sermons benefited from a leavening of
         humor" [syn: leavening]
      v : cause to puff up with a leaven; "unleavened bread" [syn: raise,
           prove]


 Leaven
    (1.) Heb. seor (Ex. 12:15, 19; 13:7; Lev. 2:11), the remnant of
    dough from the preceding baking which had fermented and become
    acid.

      (2.) Heb. hamets, properly "ferment." In Num. 6:3, "vinegar of
    wine" is more correctly "fermented wine." In Ex. 13:7, the
    proper rendering would be, "Unfermented things [Heb. matstsoth]
    shall be consumed during the seven days; and there shall not be
    seen with thee fermented things [hamets], and there shall not be
    seen with thee leavened mass [seor] in all thy borders." The
    chemical definition of ferment or yeast is "a substance in a
    state of putrefaction, the atoms of which are in a continual
    motion."

      The use of leaven was strictly forbidden in all offerings made
    to the Lord by fire (Lev. 2:11; 7:12; 8:2; Num. 6:15). Its
    secretly penetrating and diffusive power is referred to in 1
    Cor. 5:6. In this respect it is used to illustrate the growth of
    the kingdom of heaven both in the individual heart and in the
    world (Matt. 13:33). It is a figure also of corruptness and of
    perverseness of heart and life (Matt. 16:6, 11; Mark 8:15; 1
    Cor. 5:7, 8).