| Answer | Crossword Clue |
|---|---|
| zoocytia | ZOOCYTIUM, a hollow vessel |
| zoocytium | a hollow vessel |
| dilatation | A dilated part of a hollow organ or vessel |
| dilatations | A dilated part of a hollow organ or vessel |
| lid | a movable cover for the opening of a hollow container (as a vessel or box) |
