Crystall.
one of the imaginary reference lines passing through the center of an ideal crystal, designated a, b, or c.
[ 1855-60 ]
Crystall.
one of the imaginary reference lines passing through the center of an ideal crystal, designated a, b, or c.
[ 1855-60 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012