three-dimensional

adjective

three-di·​men·​sion·​al ˈthrē-də-ˈmen(t)-sh(ə-)nəl 

also -dī-

1

: of, relating to, or having three dimensions

2

: giving the illusion of depth or varying distances

—used especially of an image or a pictorial representation on a two-dimensional medium when this illusion is enhanced by stereoscopic means

3

: describing or being described in well-rounded completeness

… a three-dimensional analysis of multiple historical processes …

—L. L. Snyder

4

: true to life : lifelike

three-dimensionality

ˈthrē-də-ˌmen(t)-shə-ˈna-lə-tē 

noun

Synonyms of three-dimensional

• realistic
• living
• naturalistic
• natural
• lifelike
• vivid

Examples of three-dimensional in a Sentence

an actress who has been acclaimed for her three-dimensional portrayal of the celebrated monarch

Recent Examples on the Web

To avoid any waste, the seamless single three dimensional-pieces were knit on a Shima Seiki knitting machine as seamless, single three-dimensional pieces. —Rosemary Feitelberg, Footwear News, 28 May 2026

Sonos Noise Cancelling Headphones Deal The Sonos Ace elevates personal audio by surrounding you in a hyperrealistic, three-dimensional soundscape powered by spatial audio and dynamic head tracking. —Juhi Wadia, PC Magazine, 27 May 2026

The scans were used to make a three-dimensional model of the octopus, including its insides. —Janet Loehrke, USA Today, 26 May 2026

Home environments are highly unstructured and vary widely, requiring robots to navigate constantly changing, complex three-dimensional spaces. —Jijo Malayil, Interesting Engineering, 25 May 2026

Word History

First Known Use

1870, in the meaning defined at sense 1

Rhymes for three-dimensional

• interventional
• nonconventional
• nondimensional
• unconventional
• unintentional
• attentional
• conventional
• dimensional
• extensional
• intensional
• intentional
• multidimensional

Kids Definition

three-dimensional

adjective

1

: of, relating to, or having three dimensions (as length, width, and height)

2

: giving the appearance of depth or varying distances