See Also: greisen(medicine)
greisen(dictionary)

vanguard (oh) and greisen (iou)


vanguard (oh)



[Date: 1400-1500; Language: Old French; Origin: avangarde, from avant-garde; AVANT-GARDE]
in/at the vanguard (of sth)
in the most advanced position of development
::The shop has always been in the vanguard of London Fashion trends.
the vanguard
the leading position at the front of an army or group of ships moving into battle, or the soldiers who are in this position

greisen (iou)



greisen noun. L19.
[German, prob. dial. from greis grey with age.]
Petrography. A light-coloured rock containing quartz, mica, and fluorine-rich minerals, produced by the pneumatolysis of granite.
greisening,
greiseni'zation nouns the pneumatolytic alteration of granite by fluorine-rich vapour E20.