| 释义 |
prop·a·ga·tion
\ˌ ̷ ̷ ̷ ̷ˈgāshən\ noun
(-s)
Etymology: Middle English propagacyon, from Middle French propagation, from Latin propagation-, propagatio, from propagatus (past participle of propagare) + -ion-, -io -ion
1. : the act or action of propagating: as
a. : natural reproduction : production of young : natural increase (as a kind of organism) in numbers : procreation
< propagation of a pure culture of bacteria >
< vegetative propagation of chrysanthemums >
b. : the spreading of something (as a belief, ideal, practice) abroad or into new regions : dissemination
c. : the transmission of a form of wave energy (as light, sound, radio wave) through space or along a path
d. : enlargement or extension (as of a crack) in a solid body
< propagation under stress of a flaw in glass >
2. obsolete : offspring, breed
• prop·a·ga·tion·al \| ̷ ̷ ̷ ̷|gāshənəl, -shnəl\ adjective |