General:
* Imagery
* Figurative language
* Sensory details
* Vivid language
* Evocative language
* Illustrative language
* Painting with words
More specific:
* Adjective-heavy language (emphasizing the use of adjectives)
* Colorful language (emphasizing vividness and imagery)
* Sensory language (emphasizing appeals to sight, sound, smell, taste, and touch)
* Lyrical language (emphasizing poetic and musical qualities)
* Detailed language (emphasizing thoroughness and precision)
Other options:
* Word painting
* Wordsmithing
* Style
* Voice
The best choice will depend on the specific context.