1. Situated at or extending to great depth; too deep to have been sounded or plumbed
   "unplumbed depths of the sea"
   - profound, unfathomed, unsounded

See also: deep

• lymph vessel
• lymphadenitis
• lymphadenoma
• lymphadenopathy
• lymphangiectasia
• lymphangiectasis
• lymphangiogram
• lymphangiography
• lymphangioma
• lymphangitis
• lymphatic
• lymphatic system
• lymphatic tissue
• lymphatic vessel
• lymphedema
• lymphoblast
• lymphoblast-like
• lymphoblastic leukemia
• lymphocyte
• lymphocytic
• lymphocytic choriomeningitis
• lymphocytic choriomeningitis virus
• lymphocytic leukemia
• lymphocytopenia
• lymphocytosis