That is how they define gender, but that does not fit with what Gender is.
When people say its a social construct, what they mean is that a set of traits are accepted by society as being male or female. They group those traits and label them.
In psychology, they do not do that. What they do is look at traits, look at what influences those traits, look at correlations. That is how they found that gender is linked to both biology and society.
Now, when you say its both social and biological factors, you are conflicting with Gender being only a social construct. Once you do that, you move to my position.
Hehe, how gender is defined is how gender is defined is how gender is defined.
Definition of tree
1 a
: a woody perennial plant having a single usually elongate main stem generally with few or no branches on its lower part
b
: a shrub or herb of arborescent form
2
: something in the form of or resembling a tree: such as
a
: a diagram or graph that branches usually from a simple stem or vertex without forming loops or polygons
b
: a much-branched system of channels especially in an animal body
3 a (1)
: a piece of wood (such as a post or pole) usually adapted to a particular use or forming part of a structure or implement
(2) archaic
: the cross on which Jesus was crucified
b archaic
: gallows
A tree however is caused by a seed placed in fertile soil with sunlight and water present and all of those will have causes that go back for billions of years.
Again, the question is, why is important that a word should be defined other than as it actually is defined. What is at stake in your opinion?