As the political power of the papacy in Europe waned, the idea that the pope's words could be infallible indicated the papacy's growing spiritual authority over the global Catholic Church of the late 19th century.
But now that idea is waning.
The Moon's waxing and waning gave us the idea of a month.
The changing symbolization in exhibits, art, and architecture evident at Chicago, and in particular apparent in Woodruff's sculpture, reveal something of the shifting conceptions of and waning faith in the idea of progress.
This supports the concept of "waning immunity," or the idea that the vaccine's protection declines over time, they said.
A faint perception here at home that their star might have waned inspired the idea for the mockumentary, and provides its comic narrative theme; until I saw a preview it never even occurred to me that it might be a spoof.
Enthusiasm for the idea waned, local apparatchiks complained, and the election of mavericks such as Mr Mallon, not to mention Ken Livingstone, alarmed the cabinet.
Even though the American government's interest in "technology transfer" (ie, squeezing civilian applications out of military research) seems to have waned since the idea was introduced in 1990, Dr London and his colleagues have inspired enough confidence for a number of private companies to take note of their work and commercialise it.
Her marriage to David Beckham helped by keeping her in the public eye even as her singing career waned, although the idea that she was grasping on to her husband's fame is unfair: Victoria was an integral part of the appeal of Brand Beckham and increased her husband's status just as much as he helped hers.
In early-spring, ESPN the Magazine published an article debating the merits of "Hero Ball": roughly, whether or not it was a good idea, in the waning moments of a game, simply to hand the ball to Kobe, LeBron, Kevin, or Derrick and let him go to work.
