'Divisional planes' definitions:

Definition of 'Divisional planes'

From: GCIDE
  • Divisional \Di*vi"sion*al\, a. That divides; pertaining to, making, or noting, a division; as, a divisional line; a divisional general; a divisional surgeon of police. [1913 Webster]
  • Divisional planes (Geol.), planes of separation between rock masses. They include joints. [1913 Webster]