emergence

(noun) the gradual beginning or coming forth. Synonyms: outgrowth, growth. Example: "Figurines presage the emergence of sculpture in greece."

(noun) the becoming visible. Synonyms: egress, issue. Example: "Not a day's difference between the emergence of the andrenas and the opening of the willow catkins."

(noun) the act of emerging. Synonyms: emersion.

(noun) the act of coming (or going) out; becoming apparent. Synonyms: egress, egression.