definition of
[specialisation]

[1] #1 specialisation n. [specialization, differentiation] (biology) the structural adaptation of some body part for a particular function; "cell differentiation in the developing embryo". wn

[2] #2 specialisation n. [specialization] the act of specializing; making something suitable for a special purpose. wn

[3] #3 specialisation n. [specialization, specialty, speciality, specialism] the special line of work you have adopted as your career; "his specialization is gastroenterology". wn