Lehmann, who died aged 104 in 1993, studied earthquakes to find that the Earth had both an inner and outer core, a revelation which redefined how the planet was studied.
I disregard the word nationalism in the SNP because I think it is being redefined and it's about having self-respect.
From his long, illustrious Army career to his leadership at the helm of CIA, Dave has redefined what it means to serve and sacrifice for one's country.
The rest of the border, which has been contested by both countries, was redefined in a 2013 decision by the international court of justice in the Hague.
Still, it manages to show flashes of genuine emotion – a brief kiss that meant nothing to Karma, but meant everything to Amy; how tactile behaviour between friends must now be redefined; whether there is a need for labels if it is just one person on the receiving end of this strange new affection.
The 1990s culture wars were fought over many social issues that many on the right thought were being redefined from their traditional normals by progressive activists and the liberal media for the next generation.
In many countries he was treated rather more respectfully than at home, where his candour was redefined as petulance by his critics He remained determined that he would be vindicated, until close to the end.
Nationalism was itself being redefined, agreed the Rev Douglas Gay, a lecturer in theology at the University of Glasgow and an ordained Church of Scotland minister.
What the would-be linguistic dictators called the "anarchy" of the English language has been redefined by writers from the greater anglophone world as its great generosity.
He could scarcely have imagined then that, long before the end of that season, he would be redefined as yesterday's man.
"Wycliffe's words were the precursor to an extraordinary transformation, a change in technology that redefined the relationship between the governing and the governed," said Carswell.
