| PIA | ___ mater, membrane surrounding the brain |
| DURA | ___ mater: membrane surrounding the brain |
| DURAL | Of the membrane surrounding the brain (5) |
| IRIS | The circular coloured membrane surrounding the pupil of the eye |
| PLEURISY | Inflammation of the membrane surrounding the lungs |
| AMNIOTE | Member of a biological clade including birds, reptiles and mammals, named after a membrane surrounding the foetus |
| SKULL | Bone structure surrounding the brain |
| SYNOVITIS | Inflammation of the membrane surrounding joints such as the knees and hips, often related to arthritic conditions (9) |
| AMNION | The inner membrane surrounding an embryo |
| SAC | Bag like cavity / the distended membrane surrounding a cyst, a tumor |
| CAUL | Membrane surrounding a fetus |
| ARACHNOID | ___ mater, one of the protective membranes that cover the brain and spinal cord (9) |
| STABAT | ____ Mater, Latin hymn commemorating the sorrows of the Virgin Mary (6) |
| AMNIOTIC | --- fluid, the fluid surrounding the foetus in the womb (8) |
| ALMA | ___ mater (literally, "dear mother") |
| TOW | ___ Mater (character in "Cars") |
| FILIA | A female relative: neptis, ____, mater, avia |
| TERRA | _ Mater (Roman Mother Earth) |
| CYTOSOL | The soluble component of the protoplasm of a cell surrounding the nucleus (7) |
| HANOI | Capital city surrounding the Lake of the Restored Sword |
