culminate

Short definition from Wiktionary

Verb

1. 1
   Of a heavenly body, to be at the highest point, reach its greatest altitude.
2. 2
   To reach the (physical or figurative) summit, highest point, peak etc.
3. 3
   To reach a climax; to come to a decisive point, especially an end or conclusion.
4. 4
   To reach a point at which continued progress is not possible.
5. 5
   To finalize, bring to a conclusion, form the climax of.

Adjective

1. 1
   Relating to the culmen.
2. 2
   Growing upward, as opposed to lateral growth.