|a narrow, fluid-filled space between the pleural membranes of the lung and the inner chest wall.|
|fluid-filled space between the two layers of the pericardium|
|1.||situated at the back of or behind something|
|2.||coming after or following another in a series|
|3.||coming after in time|
|4.||zoology (of animals) of or near the hind end|
|5.||botany (of a flower) situated nearest to the main stem|
|6.||anatomy dorsal or towards the spine|
|7.||the buttocks; rump|
|8.||statistics a posterior probability|
|[C16: from Latin: latter, from posterus coming next, from post after]|
posterior pos·te·ri·or (pŏ-stēr'ē-ər, pō-)
Located behind a part or toward the rear of a structure.
Relating to the caudal end of the body in quadrupeds or the dorsal side in humans.
Near the tail or caudal end of certain embryos.