ultrabasic /ul-trə-bāˈsik/ (petrology)

Extremely basic, very poor in silica

• after one's own heart
• afterpains
• after-parties
• after-party
• afterpiece
• afterpieces
• afters
• aftersales
• aftersales service
• aftershaft
• aftershafts
• aftershave
• aftershaves
• aftershock
• aftershocks
• aftershow
• aftersun
• aftersuns
• aftersupper
• aftersuppers
• afterswarm
• afterswarms
• aftertaste
• aftertastes
• after-tax