Prop`a*ga"tion (?), n. [L. propagatio: cf. F. propagation.]

1. 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.

2. The spreading abroad, or extension, of anything; diffusion;

dissemination; as, the propagation of sound; the propagation of the

gospel. Bacon.

Prop"a*ga*tive (?), a. Producing by propagation, or by a process of

growth.

Prop"a*ga`tor (?), n. [L.: cf. F. propagateur.] One who propagates; one

who continues or multiplies.

||Pro*pag"u*lum (?), n.; pl. Propagula (#). [NL. See Propagate.] (Bot.)

||A runner terminated by a germinating bud.

Pro"pane (?), n. [Propyl + methane.] (Chem.) A heavy gaseous

hydrocarbon, C3H8, of the paraffin series, occurring naturally

dissolved in crude petroleum, and also made artificially; -- called

also propyl hydride.

Pro*par"gyl (?), n. [Propinyl + Gr. &?; silver + -yl. So called because

one hydrogen atom may be replaced by silver.] (Chem.) Same as Propinyl.

Pro`par*ox"y*tone (?), n. [Gr. &?;. See Pro-, and Paroxytone.] (Gr.

Gram.) A word which has the acute accent on the antepenult.

Pro"ped (?), n. [Pref. pro- + L. pes, pedis, foot.] (Zoˆl.) Same as

Proleg.

Pro*pel" (?), v. t. [imp. & p. p. Propelled (?); p. pr. & vb. n.

Propelling.] [L. propellere, propulsum; pro forward + pellere to drive.

See Pulse a beating.] To drive forward; to urge or press onward by

force; to move, or cause to move; as, the wind or steam propels ships;

balls are propelled by gunpowder.

Pro*pel"ler (?), n.

The Gutenberg Webster's Unabridged Dictionary: Section P and Q · 第 1690 / 2103 题