endocardial cell development
The progression of an endocardial cell over time, from its formation to the mature cell. An endocardial cell is a specialized endothelial cell that makes up the endocardium portion of the heart.
GO:0001885
endothelial cell development
is_a
GO:0055006
cardiac cell development
is_a
GO:0060956
endocardial cell differentiation
part_of