The outer layer of the uterus is called the perimetrium; it is the visceral. peritoneum of the uterus. The endometrium has two distinct layers (Fig. 28.9c): (1) The functional layer changes in. response to the monthly pattern of hormones.
uk â /ËpÉªn.É.kÉl/ us â /ËpÉªn.É.kÉl/. âº [ C usually singular ] the most successful or admired part of a system or achievement: By the age of 32 she had reached the pinnacle of her career.
LINK / CITE ADD TO WORD LIST. noun. The pinnacle is the highest point or the greatest success achieved. An example of pinnacle is when you are promoted to president of the company.1  a small turret or spire on a buttress or a supporting pier. A tall, sharp and craggy rock or mountain. ( 2 figuratively) An all-time high; a point of greatest achievement or success. ( 3 architecture) An upright member, generally ending in a small spire, used to finish a buttress, to constitute a part in a proportion, as where pinnacles flank a gable or spire.