1. A trivalent metallic element of the rare earth group; occurs with yttrium
   - erbium, Er

Type of: metal, metallic element

Part of: fergusonite, gadolinite, ytterbite

• approach
• approach path
• approach pattern
• approach shot
• approach trench
• approachability
• approachable
• approaching
• approbate
• approbation
• approbative
• approbatory
• appropriable
• appropriate
• appropriately
• appropriateness
• appropriation
• appropriation bill
• appropriative
• appropriator
• approval
• approve
• approved
• approver
• approving