Noun

(en noun)

The top or highest point; pinnacle; culmination.

* (rfdate), (Alexander Pope)

The very acme and pitch of life for epic poetry.

* (rfdate),

The moment when a certain power reaches the acme of its supremacy.

(medicine) The crisis or height of a disease.

Mature age; full bloom of life.

(Ben Jonson)

Noun

(en-noun)

top; summit; acme

(zoology) The dorsal ridge of a bird's bill.

* {{quote-journal, 1997, date=June 20, , A Role for Ecotones in Generating Rainforest Biodiversity, Science citation

, passage=The measurements were taken as follows: wing length, from the carpal joint to the tip of the longest primary; tarsus length, from the tibiotarsal joint to the distal undivided scute; upper mandible length, the chord length from the point where the culmen enters the feathers of the head to the tip; bill depth, in the vertical plane level at the anterior edge of the nares. }}

* {{quote-book, year=1910, author=Alfred M. Tozzer and Glover M. Allen, title=Animal Figures in the Maya Codices, chapter=, edition= citation

, passage=A very simple form was found in the carving shown in Pl. 17, fig. 13, where a long projecting knob is seen at the base of the culmen . }}