On Wikipedia you can find this definition: Pansexuality, or omnisexuality, is sexual attraction, sexual desire, romantic love, or emotional attraction toward persons of all gender identities and biological sexes. Self-identified pansexuals may consider pansexuality a sexual orientation, and refer to themselves as gender-blind, asserting that gender and sex are insignificant or irrelevant in determining whether they will be sexually attracted to others. The Oxford English Dictionary defines pansexuality as, “not limited or inhibited in sexual choice with regard to gender or activity”.
The concept of pansexuality deliberately rejects the gender binary, the “notion of two genders and indeed of specific sexual orientations”, as pansexual people are open to relationships with people who do not identify as strictly men or women.
In short, I can like a transsexual lesbian, a heterosexual man, a biological woman (whatever her sexual orientation) or the combination that you can think of. I do not look at what each one is, what can attract me is the inside and I assure you that submitting an interesting mind (whatever the sexual orientation or external appearance) is what drives me.
And do not confuse pansexuality with promiscuity, because I am selective 😉