vertex

As a letter s

is the letter s with a.

As a noun vertex is

the highest point of something.

As a noun vertex

is the highest point of something.

As a verb culminate is

(astronomy) of a heavenly body, to be at the highest point, reach its greatest altitude.

As nouns the difference between culmination and vertex

is that culmination is (astronomy) the attainment of the highest point of altitude reached by a heavenly body; passage across the meridian; transit while vertex is the highest point of something.

As nouns the difference between apogee and vertex

is that apogee is apogee (a point in an orbit around the earth) while vertex is the highest point of something.

As a noun vertex

is the highest point of something.

As an adjective false is

(label) one of two states of a boolean variable; logic.

As nouns the difference between climax and vertex

is that climax is climax while vertex is the highest point of something.

As nouns the difference between nurdle and vertex

is that nurdle is (cricket) such a shot while vertex is the highest point of something.

As a verb nurdle

is (cricket) to score runs by gently nudging the ball into vacant areas of the fieldhttp://newsbbccouk/sport1/hi/cricket/england/6668549stm 1349: "collingwood picks up the first run after lunch with a nurdle to wide mid-on".

As an acronym crest

is (military) the five types of verbal support used to enhance an (oral) presentation: comparisons, reasons, examples, statistics, testimony.

As a noun vertex is

the highest point of something.

As a noun vertex

is the highest point of something.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between vertex and null

is that vertex is the highest point of something while null is zero, nil; the cardinal number before einn.