1. Of or relating to organisms (as green plants) that can make complex organic nutritive compounds from simple inorganic sources by photosynthesis
   - autotrophic

See also: autophyte

• unwoven
• unwrap
• unwrapped
• unwrinkled
• unwritten
• unwritten law
• unyielding
• unyieldingness
• unyoke
• unzip
• up
• up and down
• up for
• up for grabs
• up here
• up in arms
• up in the air
• up quark
• up the creek
• up the stairs
• up to
• up to her neck
• up to his neck
• up to my neck
• up to now