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2 definitions found
 for Alternate generation
From The Collaborative International Dictionary of English v.0.48 :

  Generation \Gen`er*a"tion\, n. [OE. generacioun, F.
     g['e]n['e]ration, fr.L. generatio.]
     1. The act of generating or begetting; procreation, as of
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     2. Origination by some process, mathematical, chemical, or
        vital; production; formation; as, the generation of
        sounds, of gases, of curves, etc.
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     3. That which is generated or brought forth; progeny;
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     4. A single step or stage in the succession of natural
        descent; a rank or remove in genealogy. Hence: The body of
        those who are of the same genealogical rank or remove from
        an ancestor; the mass of beings living at one period;
        also, the average lifetime of man, or the ordinary period
        of time at which one rank follows another, or father is
        succeeded by child, usually assumed to be one third of a
        century; an age.
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              This is the book of the generations of Adam. --Gen.
                                                    v. 1.
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              Ye shall remain there [in Babylon] many years, and
              for a long season, namely, seven generations.
                                                    --Baruch vi.
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              All generations and ages of the Christian church.
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     5. Race; kind; family; breed; stock.
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              Thy mother's of my generation; what's she, if I be a
              dog?                                  --Shak.
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     6. (Geom.) The formation or production of any geometrical
        magnitude, as a line, a surface, a solid, by the motion,
        in accordance with a mathematical law, of a point or a
        magnitude; as, the generation of a line or curve by the
        motion of a point, of a surface by a line, a sphere by a
        semicircle, etc.
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     7. (Biol.) The aggregate of the functions and phenomene which
        attend reproduction.
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     Note: There are four modes of generation in the animal
           kingdom: scissiparity or by fissiparous generation,
           gemmiparity or by budding, germiparity or by germs, and
           oviparity or by ova.
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     Alternate generation (Biol.), alternation of sexual with
        asexual generation, in which the products of one process
        differ from those of the other, -- a form of reproduction
        common both to animal and vegetable organisms. In the
        simplest form, the organism arising from sexual generation
        produces offspiring unlike itself, agamogenetically.
        These, however, in time acquire reproductive organs, and
        from their impregnated germs the original parent form is
        reproduced. In more complicated cases, the first series of
        organisms produced agamogenetically may give rise to
        others by a like process, and these in turn to still other
        generations. Ultimately, however, a generation is formed
        which develops sexual organs, and the original form is
     Spontaneous generation (Biol.), the fancied production of
        living organisms without previously existing parents from
        inorganic matter, or from decomposing organic matter, a
        notion which at one time had many supporters; abiogenesis.
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From The Collaborative International Dictionary of English v.0.48 :

  Alternate \Al*ter"nate\ (?; 277), a. [L. alternatus, p. p. of
     alternate, fr. alternus. See Altern, Alter.]
     1. Being or succeeding by turns; one following the other in
        succession of time or place; by turns first one and then
        the other; hence, reciprocal.
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              And bid alternate passions fall and rise. --Pope.
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     2. Designating the members in a series, which regularly
        intervene between the members of another series, as the
        odd or even numbers of the numerals; every other; every
        second; as, the alternate members 1, 3, 5, 7, etc.; read
        every alternate line.
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     3. (Bot.) Distributed, as leaves, singly at different heights
        of the stem, and at equal intervals as respects angular
        divergence. --Gray.
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     Alternate alligation. See Alligation.
     Alternate angles (Geom.), the internal and angles made by
        two lines with a third, on opposite sides of it. It the
        parallels AB, CD, are cut by the line EF, the angles AGH,
        GHD, as also the angles BGH and GHC, are called alternate
     Alternate generation. (Biol.) See under Generation.
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