1. Of or relating to or involving spectroscopy
   - spectroscopic

See also: spectroscopy

• northern holly fern
• Northern Ireland
• northern Jacob's ladder
• northern lights
• Northern lobster
• northern mammoth
• Northern Mariana Islands
• Northern Marianas
• northern oak fern
• northern oriole
• northern parula
• northern phalarope
• northern pike
• northern pin oak
• northern pitch pine
• northern pocket gopher
• northern porgy
• northern red oak
• Northern Rhodesia
• northern scup
• northern sea robin
• northern shrike
• northern snakehead
• Northern snow bedstraw
• Northern Spy