A person who acts as a parent in rearing a child; a step-parent or adoptive parent.
A surrogate parent
An organism from which a plant or animal is immediately biologically descended.
A parent company.
One of the two persons from whom one is immediately biologically descended; a mother or father.
The object from which a child or derived object is descended; a node superior to another node.
The nuclide that decays into a daughter nuclide.
The source or origin of something.
A third person who has provided DNA samples in an IVF procedure in order to alter faulty genetic material
Sponsor, supporter, owner, protector.
To act as parent, to raise or rear.
One who precedes; one who has preceded another in any state, position, office, etc.; one whom another follows or comes after, in any office or position.
A model or type of machinery or device which precedes the current (or later) one. Usually used to describe an earlier, outdated model.
A vertex having a directed path to another vertex