1. Of the colour of slate or granite
   "the slaty sky of dawn"
   - slate-grey [Brit, Cdn], slate-gray [US], slaty-grey [Brit, Cdn], slaty-gray [US], slatey, stone-grey [Brit, Cdn], stone-gray [US]

See also: achromatic, neutral

• Photinia
• Photinia arbutifolia
• Photius
• photo
• photo credit
• photo finish
• photo op
• photo opportunity
• photo-offset
• photo-offset printing
• Photoblepharon
• Photoblepharon palpebratus
• photocathode
• photocell
• photochemical
• photochemical exchange
• photochemical reaction
• photochemistry
• photocoagulation
• photocoagulator
• photoconduction
• photoconductive
• photoconductive cell
• photoconductivity
• photocopier