naissant
Concise Oxford English Dictionary © 2008 Oxford University Press:
naissant /ˈneɪs(ə)nt/
▶adjective Heraldry (of a charge, especially an animal) issuing from the middle of an ordinary, especially a fess.
– origin C16: from Fr., lit. ‘being born’, pres. part. of naître.
'naissant' also found in these Oxford entries:

