1. Involving two dimensions
   - planar 
2. Lacking the expected range or depth; not designed to give an illusion or depth
   "a film with two-dimensional characters"; "a flat two-dimensional painting"
   - 2-dimensional, flat

See also: coplanar, flat, flattened, multidimensional, placoid, planate, platelike, tabular, two-dimensionality

Encyclopedia: Two-dimensional

• second wind
• Second World War
• second-degree burn
• second-guess
• second-hand speech
• second-hand store
• second-in-command
• second-place finish
• second-rate
• second-rater
• second-sighted
• second-stringer
• second-year
• secondarily
• secondary
• secondary amenorrhea
• secondary cell
• secondary censorship
• secondary coil
• secondary dentition
• secondary diagonal
• secondary dysmenorrhea
• secondary education
• secondary emission
• secondary hypertension