What is the meaning of Transgender?

Of a person: having a gender (identity) which is different from one's assigned sex; that is, the identity of a trans man, trans woman, or someone non-binary, for example, agender, bigender, or third-gender.

Of a person: having a gender (identity) which is opposite from the sex one was assigned at birth: being assigned male but having a female gender, or vice versa (that is, not including a non-binary identity).

Of a person: transgressing or not identifying with culturally conventional gender roles and categories of male or female.

Of or pertaining to transgender people (sense 1), or their experiences or identity.

Of a space: intended primarily for transgender people.

Of a space: available for use by transgender people, rather than only non-transgender people.

Synonym of crossgender (across multiple genders)

A transgender person

Transgender people collectively.

Synonym of transgenderism (the state of being transgender)

To change the gender of (someone).

To change the sex of (someone).

transgender

transgender

a transgender person

transgender

Source: wiktionary.org