/proh'gray day"sheuhn/ , n. Geol.
seaward growth of a beach, delta, fan, etc., by progressive deposition of sediment by rivers or shoreline processes.
[ 1905-10; prograde (PRO- 1 + (RETRO)GRADE) + -ATION ]
/proh'gray day"sheuhn/ , n. Geol.
seaward growth of a beach, delta, fan, etc., by progressive deposition of sediment by rivers or shoreline processes.
[ 1905-10; prograde (PRO- 1 + (RETRO)GRADE) + -ATION ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012