three-dimensional definition
- Definition of âthree-dimensionalâ - English Dictionary. See all translations. uk â /ËÎ¸riË.daÉªËmen.ÊÉn.Él/ us â /ËÎ¸riË.daÉªËmen.ÊÉn.Él/ abbreviation 3-D. âº having or appearing to have three dimensions (= length, width, and height) and therefore looking real: The picture had a three-dimensional effect.