Search the Dictionary

A believer in panspermy; one who rejects the theory of spontaneous generation; a biogenist.

organisms must come from living parents; biogenesis; -- the opposite of Ant: spontaneous generation.

ining to, or connected with, the parenchyma of a tissue or an organ; as, parenchymatous degeneration.

t fertilization, of cells capable of germination. It is one of the phenomena of alternate generation. Cf. Heterogamy, and Metagenesis.

The generation, and method of development, of disease; as, the pathogeny of yellow fever is unsettled.

f society and government in which the head of the family exercises authority over all its generations. Patriarchal cross (Her.), a cross, the shaft of which is intersected by two transverse beams, the upper one being the smaller. See Illust.

The male member, or organ of generation.

ich explains inheritance by the transmission of the type of growth force possessed by one generation to another.

The doctrine of the generation of plants.

Of or pertaining to pigments; furnished with pigments. Dunglison. Pigmentary degeneration (Med.), a morbid condition in which an undue amount of pigment is deposited in the tissues.

ting independently of the chromosome, but transferred, like the chromosome, to subsequent generations. In bacteria, plasmids often carry the genes for antibiotic resistance; they are exploited in genetic engineering as the vehicles for introduction of extraneous DNA into cells, to alter the genetic makeup of the cell.…

The race that proceeds from a progenitor; offspring to the furthest generation; the aggregate number of persons who are descended from an ancestor of a generation; descendants; -- contrasted with ancestry; as, the posterity of Abraham. If [the crown] should not stand in thy posterity. Shak.

The act of begetting; generation and production of young. South.

Anything that is produced, whether as the result of generation, growth, labor, or thought, or by the operation of involuntary causes; as, the products of the season, or of the farm; the products of manufactures; the products of the brain. There are the product Of those ill-mated marriages. Milton. These institutions ar…

The generation of young.

Capable of being propagated, or of being continued or multiplied by natural generation or production.

To cause to continue or multiply by generation, or successive production; -- applied to animals and plants; as, to propagate a breed of horses or sheep; to propagate a species of fruit tree.

The act of propagating; continuance or multiplication of the kind by generation or successive production; as, the propagation of animals or plants. There is not in nature any spontaneous generation, but all come by propagation. Ray.

e spore of ferns and other Pteridophyta, which bears the true sexual organs; the oöphoric generation of ferns, etc.

The external organs of generation.