ultrabasic /ul-trə-bāˈsik/ (petrology)

Extremely basic, very poor in silica

• signets
• signeur
• signeurie
• signeuries
• signieur
• signieurs
• signifiable
• significance
• significances
• significance test
• significance tests
• significancy
• significant
• snuffiest
• snuffiness
• snuffinesses
• snuffing
• snuffings
• snuff it
• snuffle
• snuffled
• snuffler
• snufflers
• snuffles
• snufflier