The Collaborative International Dictionary
Sejant
Sejant \Se"jant\, Sejeant \Se"jeant\, a. [F. s['e]ant, p. pr. of seoir to sit, L. sedere.] (Her.) Sitting, as a lion or other beast.
Sejant rampant, sitting with the forefeet lifted up.
--Wright.
Wiktionary
sejant
a. (context heraldry English) seated, sitting.