The act of ascending; a rising; ascent.

Specifically: The visible ascent of our Savior on the fortieth day after his resurrection. (Acts i. 9.) Also, Ascension Day.

An ascending or arising, as in distillation; also that which arises, as from distillation.

Festival occurring forty days after Easter that celebrates Christ?s ascension into heaven.

a movement upward; "they cheered the rise of the hot-air balloon"

(astronomy) the rising of a star above the horizon

the act of changing location in an upward direction

Due to the obliquity of the ecliptic, some signs rise over the horizon faster than others. Signs of long ascension require more time to rise than signs of short ascension.