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n. (Economics) The increase in total cost of production as a result of producing one more unit of output; since certain ovrhead costs are fixed, the marginal cost is almost aways less than the total per-unit cost of production averaged over all units produced.
Syn. -- incremental cost, differential cost. [ WordNet 1.5 ]

n. (Chem., Biochem.) A chemical substance produced by a living organism; -- a term used commonly in reference to chemical substances found in nature that have distinctive pharmacological effects. Such a substance is considered a natural product even if it can be prepared by total synthesis. [ PJC ]

n. (Chem.) That branch of chemistry which deals with the isolation, identification, structure elucidation, and study of the chemical characteristics of chemical substances produced by living organisms. [ PJC ]

n. A failure to produce or exhibit. [ 1913 Webster ]

adj. not directly productive; as, nonproductive labor. [ WordNet 1.5 ]

n. Excessive production; supply beyond the demand. J. S. Mill. [ 1913 Webster ]

(Physics) The simultaneous creation of a particle and its antiparticle, such as an electron and positron, from a photon; -- usually due to its interaction with the strong field near a nucleus. [ PJC ]

n. [ L. productus, p. pr. of producere. See Produce. ] [ 1913 Webster ]

1. 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. [ 1913 Webster ]

There are the product
Of those ill-mated marriages. Milton. [ 1913 Webster ]

These institutions are the products of enthusiasm. Burke. [ 1913 Webster ]

2. (Math.) The number or sum obtained by adding one number or quantity to itself as many times as there are units in another number; the number resulting from the multiplication of two or more numbers; as, the product of the multiplication of 7 by 5 is 35. In general, the result of any kind of multiplication. See the Note under Multiplication. [ 1913 Webster ]

Syn. -- Produce; production; fruit; result; effect; consequence; outcome; work; performance. [ 1913 Webster ]

v. t. [ 1913 Webster ]

1. To produce; to bring forward. “Producted to . . . examination.” [ Obs. ] Foxe. [ 1913 Webster ]

2. To lengthen out; to extend. [ Obs. ] [ 1913 Webster ]

He that doth much . . . products his mortality. Hackett. [ 1913 Webster ]

3. To produce; to make. [ Obs. ] Holinshed. [ 1913 Webster ]

n. The state of being productible; producibility. Ruskin. [ 1913 Webster ]

a. [ Cf. F. productible. ] Capable of being produced; producible. [ 1913 Webster ]

a. [ L. productilis, fr. producere to stretch out. ] Capable of being extended or prolonged; extensible; ductile. [ 1913 Webster ]

n. [ L. productio a lengthening, prolonging: cf. F. production. See Produce. ] [ 1913 Webster ]

1. The act or process or producing, bringing forth, or exhibiting to view; as, the production of commodities, of a witness. [ 1913 Webster ]

2. That which is produced, yielded, or made, whether naturally, or by the application of intelligence and labor; as, the productions of the earth; the productions of handicraft; the productions of intellect or genius. [ 1913 Webster ]

3. The act of lengthening out or prolonging. [ 1913 Webster ]

Syn. -- Product; produce; fruit; work; performance; composition. [ 1913 Webster ]

a. [ F. productif, L. productivus fit for prolongation. ] [ 1913 Webster ]

1. Having the quality or power of producing; yielding or furnishing results; as, productive soil; productive enterprises; productive labor, that which increases the number or amount of products. [ 1913 Webster ]

2. Bringing into being; causing to exist; producing; originative; as, an age productive of great men; a spirit productive of heroic achievements. [ 1913 Webster ]

And kindle with thy own productive fire. Dryden. [ 1913 Webster ]

This is turning nobility into a principle of virtue, and making it productive of merit. Spectator. [ 1913 Webster ]

3. Producing, or able to produce, in large measure; fertile; profitable. [ 1913 Webster ]

-- Pro*duc"tive*ly, adv. -- Pro*duc"tive*ness, n. [ 1913 Webster ]

n. The quality or state of being productive; productiveness. Emerson. [ 1913 Webster ]

Not indeed as the product, but as the producing power, the productivity. Coleridge. [ 1913 Webster ]

n. A female producer. [ 1913 Webster ]

‖n. [ NL. See Product. ] (Paleon.) An extinct genus of brachiopods, very characteristic of the Carboniferous rocks. [ 1913 Webster ]

n. [ Cf. F. reproduction. ] 1. The act or process of reproducing; the state of being reproduced; specifically (Biol.), the process by which plants and animals give rise to offspring. [ 1913 Webster ]

☞ There are two distinct methods of reproduction; viz.: asexual reproduction (agamogenesis) and sexual reproduction (gamogenesis). In both cases the new individual is developed from detached portions of the parent organism. In asexual reproduction (gemmation, fission, etc.), the detached portions of the organism develop into new individuals without the intervention of other living matter. In sexual reproduction, the detached portion, which is always a single cell, called the female germ cell, is acted upon by another portion of living matter, the male germ cell, usually from another organism, and in the fusion of the two (impregnation) a new cell is formed, from the development of which arises a new individual. [ 1913 Webster ]

2. That which is reproduced. [ 1913 Webster ]

a. [ Cf. F. reproductif. ] Tending, or pertaining, to reproduction; employed in reproduction. Lyell. [ 1913 Webster ]

a. Reproductive. [ 1913 Webster ]

n. (Polit. Econ.) The production of less than is demanded or of less than the usual supply. F. A. Walker. [ 1913 Webster ]