Der`e*lic"tion (?), n. [L. derelictio.]
1.
The act of leaving with an intention not to reclaim or resume; an utter forsaking abandonment.
Cession or dereliction, actual or tacit, of other powers.
Burke.
2.
A neglect or omission as if by willful abandonment.
A total dereliction of military duties.
Sir W. Scott.
3.
The state of being left or abandoned.
4. Law
A retiring of the sea, occasioning a change of high-water mark, whereby land is gained.
© Webster 1913.